RHSA-2026:30083

Vulnerability from csaf_redhat - Published: 2026-06-25 18:47 - Updated: 2026-11-05 20:36
Summary
Red Hat Security Advisory: Red Hat build of Keycloak 26.6.4 Security Update
Severity
Important
Notes
Topic: New Red Hat build of Keycloak 26.6.4 packages are available from the Customer Portal
Details: Red Hat build of Keycloak 26.6.4 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes: * Information disclosure via CORS header injection due to unvalidated JWT azp claim (CVE-2026-37977) * Server-Side Request Forgery via OIDC token endpoint manipulation (CVE-2026-4874) * eclipse-vertx/vert.x: Denial of Service via TLS handshake with wildcard server name (CVE-2026-6860) * Improper Access Control on Keycloak Server when the account Account API feature is disabled (CVE-2026-7500) * Policy bypass during WebAuthn credential registration via client-side JavaScript manipulation (CVE-2026-8830) * Security flaw in org.keycloak/keycloak-services (CVE-2026-8922) * Information disclosure through arbitrary filesystem path probing (CVE-2026-9083) * Cross-site scripting (XSS) via case-insensitive URI validation bypass (CVE-2026-9086) * Cross-Session Email Verification Proof Not Bound to Upstream Identity in First-Broker-Login (CVE-2026-9087) * Information disclosure due to user profile permission bypass (CVE-2026-9088) * Group-Admin Escalation to Realm-Admin (CVE-2026-9099) * Privilege escalation due to oversized subject_token JWT (CVE-2026-9704) * Attacker can re-enable and take over disabled clients via Registration Access Token (CVE-2026-9705) * Organization Data Leak After Feature Disabled in Keycloak (CVE-2026-9791) * Security restriction bypass allows unauthorized ROPC token acquisition (CVE-2026-9792) * Information disclosure via SAML ECP endpoint (CVE-2026-9794) * Privilege escalation via improper scope mapping enforcement (CVE-2026-9795) * Unauthorized access to resources via UMA permission ticket bypass (CVE-2026-9799) * Authorization bypass via incorrect URI comparison (CVE-2026-9800) * Denial of Service via malformed LDAP password policy response (CVE-2026-9801) * Unauthorized account access via replayed refresh tokens after cluster restart (CVE-2026-9802) * Denial of Service via malformed Authorization header (CVE-2026-9803)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

A flaw was found in eclipse-vertx/vert.x. A remote attacker can exploit this vulnerability by performing a Transport Layer Security (TLS) handshake and presenting a server name extension with a server wildcard name. This can lead to a denial of service (DoS) condition, impacting the availability of the affected system.

CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Red Hat build of Keycloak 26.6.4
Red Hat / Red Hat build of Keycloak
cpe:/a:redhat:build_keycloak:26.6::el9 —
Vendor Fix fix
Workaround
Threats
Impact Moderate

A flaw was found in Keycloak. A realm administrator with the "manage-realm" role can exploit this vulnerability by submitting an arbitrary filesystem path as a keystore parameter when creating a key provider component. This allows the administrator to probe arbitrary filesystem paths, determining which files exist and are readable by the Keycloak process. This information disclosure could be used to identify high-value targets for follow-on attacks.

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Moderate

A flaw was found in Keycloak. A remote attacker with administrative privileges, specifically those with `manage-client` permission or access to client registration endpoints, could bypass client Uniform Resource Identifier (URI) validation. This is achieved by registering a malicious client with a specially crafted redirect URI using a case-insensitive `javascript:` or `data:` scheme. This Cross-Site Scripting (XSS) vulnerability allows for arbitrary code execution in the Keycloak origin when a victim clicks the crafted link, such as in the logout flow or the Admin Console.

CWE-79 - Improper Neutralization of Input During Web Page Generation
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Keycloak. A missing authorization check in the GroupResource.addChild() endpoint within the Admin REST API allows an authenticated user with limited administrative privileges to reparent any existing group. When Fine-Grained Admin Permissions v2 (FGAPv2) is enabled, an attacker with management rights over a single low-privilege group can reparent a highly privileged group (such as one possessing the realm-admin role) under their managed group. Because group permissions follow a hierarchical structure, this action unauthorizedly grants the attacker management and password-reset capabilities over the members of the targeted privileged group. An attacker can exploit this to reset an administrator's password, compromise the account, and achieve a full realm takeover, leading to a complete compromise of confidentiality, integrity, and availability.

CWE-639 - Authorization Bypass Through User-Controlled Key
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker to reset the client's secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.

CWE-613 - DEPRECATED: Insufficient Session Expiration
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Moderate

A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.

CWE-266 - Incorrect Privilege Assignment
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access (UMA) permission ticket for one resource can exploit this by using a specific permission request prefix to bypass per-resource access control. This allows the user to gain unauthorized access to all resources of that type within the same resource server, even if they do not have a ticket for those specific resources. This vulnerability requires the resource server to be configured in PERMISSIVE policy enforcement mode and affects typed resources with ownerManagedAccess enabled, where no explicit policy protects the resource type. The primary consequence is unauthorized information disclosure or modification of resources.

CWE-639 - Authorization Bypass Through User-Controlled Key
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Moderate

A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access (UMA) permission checks. By including the configured access-denied page path within a request URL, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.

CWE-1025 - Comparison Using Wrong Factors
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to impersonate any federated user linked to the affected Identity Provider, leading to unauthorized access and potential privilege escalation.

CWE-347 - Improper Verification of Cryptographic Signature
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in netty-handler, a component of the Netty network application framework. A remote attacker can exploit an incorrect masking operation in the IpSubnetFilterRule.compareTo() function to bypass configured IPv6 subnet rules. This allows valid public IP addresses to circumvent intended network restrictions, potentially leading to unauthorized access or exposure of services.

CWE-1287 - Improper Validation of Specified Type of Input
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in netty-codec-haproxy, a component of the Netty network application framework. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy message with a malformed PP2_TYPE_SSL TLV (Type-Length-Value) header. This can lead to an IndexOutOfBoundsException and prevent the release of retained memory, ultimately causing a Denial of Service (DoS) condition for the affected application.

CWE-805 - Buffer Access with Incorrect Length Value
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Netty, a network application framework. A remote attacker can exploit this vulnerability by sending a crafted TLS (Transport Layer Security) ClientHello message. This can lead to an eager allocation of a large memory buffer, causing a Denial of Service (DoS) due to excessive memory consumption. The issue occurs in the `SslClientHelloHandler.decode()` method when processing the TLS handshake length.

CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses, which could enable an attacker to redirect network traffic or intercept sensitive data from affected applications.

CWE-346 - Origin Validation Error
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Netty's `DnsResolveContext`. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing standard bailiwick rules. Consequently, future DNS resolutions for the affected parent domain will use the poisoned cache, potentially redirecting users to malicious servers and leading to information disclosure or integrity compromise.

CWE-346 - Origin Validation Error
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in netty-codec-http2. A remote attacker could send specially crafted frames that cause a resource leak within the `DelegatingDecompressorFrameListener` class. This resource leak could lead to an Out Of Memory Error (OOME), potentially causing a Denial of Service (DoS) by taking down the entire Java Virtual Machine (JVM).

CWE-772 - Missing Release of Resource after Effective Lifetime
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in the Netty HAProxy PROXY protocol v2 codec. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy PROXY protocol v2 header with nested `PP2_TYPE_SSL` type-length-value (TLV) records. This can lead to a memory leak, causing the underlying cumulation buffer to remain permanently pinned and potentially resulting in a Denial of Service (DoS) due to resource exhaustion.

CWE-1286 - Improper Validation of Syntactic Correctness of Input
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important

A flaw was found in Netty, a network application framework. This vulnerability allows a remote attacker to bypass hostname verification due to improper handling of user-supplied trust managers. When a client is configured with a plain X.509 Trust Manager (X509TrustManager), it fails to perform necessary hostname checks, enabling an attacker to impersonate a legitimate server. This could lead to sensitive information disclosure or man-in-the-middle attacks.

CWE-347 - Improper Verification of Cryptographic Signature
Affected products
Fixed 1 product, the same list as for CVE-2026-6860
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:30083 self
https://access.redhat.com/security/updates/classi… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-6860 self
https://bugzilla.redhat.com/show_bug.cgi?id=2466990 external
https://www.cve.org/CVERecord?id=CVE-2026-6860 external
https://nvd.nist.gov/vuln/detail/CVE-2026-6860 external
https://github.com/eclipse-vertx/vert.x/pull/6102 external
https://github.com/eclipse-vertx/vert.x/security/… external
https://gitlab.eclipse.org/security/vulnerability… external
https://access.redhat.com/security/cve/CVE-2026-9083 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480168 external
https://www.cve.org/CVERecord?id=CVE-2026-9083 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9083 external
https://access.redhat.com/security/cve/CVE-2026-9086 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480170 external
https://www.cve.org/CVERecord?id=CVE-2026-9086 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9086 external
https://access.redhat.com/security/cve/CVE-2026-9099 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480182 external
https://www.cve.org/CVERecord?id=CVE-2026-9099 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9099 external
https://access.redhat.com/security/cve/CVE-2026-9705 self
https://bugzilla.redhat.com/show_bug.cgi?id=2481878 external
https://www.cve.org/CVERecord?id=CVE-2026-9705 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9705 external
https://access.redhat.com/security/cve/CVE-2026-9795 self
https://bugzilla.redhat.com/show_bug.cgi?id=2482462 external
https://www.cve.org/CVERecord?id=CVE-2026-9795 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9795 external
https://access.redhat.com/security/cve/CVE-2026-9799 self
https://bugzilla.redhat.com/show_bug.cgi?id=2482471 external
https://www.cve.org/CVERecord?id=CVE-2026-9799 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9799 external
https://access.redhat.com/security/cve/CVE-2026-9800 self
https://bugzilla.redhat.com/show_bug.cgi?id=2482472 external
https://www.cve.org/CVERecord?id=CVE-2026-9800 external
https://nvd.nist.gov/vuln/detail/CVE-2026-9800 external
https://access.redhat.com/security/cve/CVE-2026-11800 self
https://bugzilla.redhat.com/show_bug.cgi?id=2487006 external
https://www.cve.org/CVERecord?id=CVE-2026-11800 external
https://nvd.nist.gov/vuln/detail/CVE-2026-11800 external
https://access.redhat.com/security/cve/CVE-2026-44249 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488081 external
https://www.cve.org/CVERecord?id=CVE-2026-44249 external
https://nvd.nist.gov/vuln/detail/CVE-2026-44249 external
https://github.com/netty/netty/releases/tag/netty… external
https://github.com/netty/netty/releases/tag/netty… external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-44893 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488383 external
https://www.cve.org/CVERecord?id=CVE-2026-44893 external
https://nvd.nist.gov/vuln/detail/CVE-2026-44893 external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-45416 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488391 external
https://www.cve.org/CVERecord?id=CVE-2026-45416 external
https://nvd.nist.gov/vuln/detail/CVE-2026-45416 external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-45674 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488400 external
https://www.cve.org/CVERecord?id=CVE-2026-45674 external
https://nvd.nist.gov/vuln/detail/CVE-2026-45674 external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-47691 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488439 external
https://www.cve.org/CVERecord?id=CVE-2026-47691 external
https://nvd.nist.gov/vuln/detail/CVE-2026-47691 external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-48043 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488442 external
https://www.cve.org/CVERecord?id=CVE-2026-48043 external
https://nvd.nist.gov/vuln/detail/CVE-2026-48043 external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-48059 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488437 external
https://www.cve.org/CVERecord?id=CVE-2026-48059 external
https://nvd.nist.gov/vuln/detail/CVE-2026-48059 external
https://github.com/netty/netty/security/advisorie… external
https://access.redhat.com/security/cve/CVE-2026-50010 self
https://bugzilla.redhat.com/show_bug.cgi?id=2488429 external
https://www.cve.org/CVERecord?id=CVE-2026-50010 external
https://nvd.nist.gov/vuln/detail/CVE-2026-50010 external
https://github.com/netty/netty/security/advisorie… external

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          "category": "external",
          "summary": "https://github.com/eclipse-vertx/vert.x/pull/6102",
          "url": "https://github.com/eclipse-vertx/vert.x/pull/6102"
        },
        {
          "category": "external",
          "summary": "https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-3g76-f9xq-8vp6",
          "url": "https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-3g76-f9xq-8vp6"
        },
        {
          "category": "external",
          "summary": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/381",
          "url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/381"
        }
      ],
      "release_date": "2026-05-06T09:55:12.531000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "eclipse-vertx/vert.x: eclipse-vertx/vert.x: Denial of Service via TLS handshake with wildcard server name"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Swapnil Paliwal \u0026 Security Team"
          ],
          "organization": "AxiomCode"
        }
      ],
      "cve": "CVE-2026-9083",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory"
      },
      "discovery_date": "2026-05-20T14:11:24.606000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480168"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak. A realm administrator with the \"manage-realm\" role can exploit this vulnerability by submitting an arbitrary filesystem path as a keystore parameter when creating a key provider component. This allows the administrator to probe arbitrary filesystem paths, determining which files exist and are readable by the Keycloak process. This information disclosure could be used to identify high-value targets for follow-on attacks.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Keycloak: Information disclosure through arbitrary filesystem path probing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Medium: This flaw in Keycloak allows a highly privileged realm administrator with the \"manage-realm\" role to perform arbitrary filesystem path probing. By submitting a crafted keystore path, an authenticated attacker can determine the existence and readability of files on the Keycloak server, potentially identifying high-value targets for further attacks. Exploitation requires an attacker to possess the \"manage-realm\" role, which is a high-level administrative permission.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9083"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480168",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480168"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9083",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9083"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9083",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9083"
        }
      ],
      "release_date": "2026-06-25T15:58:16.784000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Ensure that only highly trusted administrators are granted the \"manage-realm\" role within Keycloak. This role provides extensive administrative privileges, including the ability to exploit this vulnerability for filesystem probing. Regularly review and audit users assigned to this role to minimize the attack surface.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: Keycloak: Information disclosure through arbitrary filesystem path probing"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "saku0512"
          ]
        }
      ],
      "cve": "CVE-2026-9086",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation"
      },
      "discovery_date": "2026-05-20T14:43:55.195000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480170"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak. A remote attacker with administrative privileges, specifically those with `manage-client` permission or access to client registration endpoints, could bypass client Uniform Resource Identifier (URI) validation. This is achieved by registering a malicious client with a specially crafted redirect URI using a case-insensitive `javascript:` or `data:` scheme. This Cross-Site Scripting (XSS) vulnerability allows for arbitrary code execution in the Keycloak origin when a victim clicks the crafted link, such as in the logout flow or the Admin Console.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Keycloak: Cross-site scripting (XSS) via case-insensitive URI validation bypass",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw is rated as High. Keycloak\u0027s client URI validation is vulnerable to a case-insensitivity issue, allowing attackers to bypass scheme blocklists by using mixed-case `javascript:` or `data:` URIs. This can lead to cross-site scripting (XSS) in the Keycloak origin when a victim interacts with a crafted link, such as during the logout flow. Exploitation requires an authenticated administrator with `manage-client` privileges or access to client registration endpoints, and user interaction.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9086"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480170",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480170"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9086",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9086"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9086",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9086"
        }
      ],
      "release_date": "2026-06-25T15:58:33.359000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "To mitigate this vulnerability, restrict the ability to register new clients and manage existing client configurations. If Dynamic Client Registration is not required, disable it in Keycloak\u0027s Realm Settings under Client Registration Policies. If Dynamic Client Registration is necessary, ensure that policies are strictly configured to prevent anonymous client registration and require initial access tokens for all client registrations. Additionally, limit the `manage-client` role to only trusted administrators. Changes to Keycloak configuration may require a service restart or redeployment to take effect.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "keycloak: Keycloak: Cross-site scripting (XSS) via case-insensitive URI validation bypass"
    },
    {
      "cve": "CVE-2026-9099",
      "cwe": {
        "id": "CWE-639",
        "name": "Authorization Bypass Through User-Controlled Key"
      },
      "discovery_date": "2026-05-20T15:05:54.381000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480182"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak. A missing authorization check in the GroupResource.addChild() endpoint within the Admin REST API allows an authenticated user with limited administrative privileges to reparent any existing group. When Fine-Grained Admin Permissions v2 (FGAPv2) is enabled, an attacker with management rights over a single low-privilege group can reparent a highly privileged group (such as one possessing the realm-admin role) under their managed group.\n\nBecause group permissions follow a hierarchical structure, this action unauthorizedly grants the attacker management and password-reset capabilities over the members of the targeted privileged group. An attacker can exploit this to reset an administrator\u0027s password, compromise the account, and achieve a full realm takeover, leading to a complete compromise of confidentiality, integrity, and availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Group-Admin Escalation to Realm-Admin",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated as High impact. When Fine-Grained Admin Permissions (FGAPv2) are enabled in Keycloak, a delegated administrator with specific `manage-members` permissions on a low-privilege group can bypass authorization checks to reparent any other group, including those with `realm-admin` roles. This allows the attacker to reset passwords of members in the stolen group, leading to a full realm takeover.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9099"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480182",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480182"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9099",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9099"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9099",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9099"
        }
      ],
      "release_date": "2026-06-25T15:58:51.884000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, restrict network access to the Keycloak Admin REST API to only trusted networks or localhost. This limits the attack surface by preventing unauthorized access to the API endpoints required for exploitation. Consult your network security documentation for specific firewall or network access control configurations. This may impact remote administration capabilities.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "keycloak: Group-Admin Escalation to Realm-Admin"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Qiulin Deng"
          ]
        }
      ],
      "cve": "CVE-2026-9705",
      "cwe": {
        "id": "CWE-613",
        "name": "DEPRECATED: Insufficient Session Expiration"
      },
      "discovery_date": "2026-05-27T12:42:28.395000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2481878"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak\u0027s client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker to reset the client\u0027s secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Keycloak: Attacker can re-enable and take over disabled clients via Registration Access Token",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A Moderate flaw was found in Keycloak where a disabled client can be re-enabled by an attacker who retains a Registration Access Token (RAT) from a prior legitimate client registration. This allows the attacker to bypass the administrator\u0027s explicit intent to disable the client, reset its secret, and restore OAuth client_credentials capability, potentially leading to unauthorized access to resources.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9705"
        },
        {
          "category": "external",
          "summary": "RHBZ#2481878",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481878"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9705",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9705"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9705",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9705"
        }
      ],
      "release_date": "2026-06-25T15:59:03.780000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, restrict network access to the Keycloak Dynamic Client Registration endpoint. Configure network firewalls to allow connections only from trusted hosts or networks that legitimately require access to this functionality. This limits the exposure of the vulnerable endpoint to unauthorized access attempts.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: Keycloak: Attacker can re-enable and take over disabled clients via Registration Access Token"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Andrej Tomci"
          ]
        }
      ],
      "cve": "CVE-2026-9795",
      "cwe": {
        "id": "CWE-266",
        "name": "Incorrect Privilege Assignment"
      },
      "discovery_date": "2026-05-28T03:15:51.639000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2482462"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak\u0027s Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client\u0027s scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user\u0027s authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Keycloak: Privilege escalation via improper scope mapping enforcement",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important privilege escalation flaw in Keycloak when Fine-Grained Admin Permissions (FGAPv2) are enabled. An attacker with fine-grained client management permissions can bypass role mapping restrictions, allowing them to inject arbitrary realm roles into a client\u0027s scope. Subsequent authentication by a privileged user through the compromised client would then project these injected roles into their token, leading to unauthorized access. Exploitation requires specific administrative preconditions and user interaction.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9795"
        },
        {
          "category": "external",
          "summary": "RHBZ#2482462",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482462"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9795",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9795"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9795",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9795"
        }
      ],
      "release_date": "2026-05-28T03:16:49.326000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, disable the Fine-Grained Admin Permissions (FGAPv2) feature in Keycloak if it is not strictly required. This can typically be done by setting `adminPermissionsEnabled` to `false` in the realm configuration. Disabling FGAPv2 will prevent the exploitation of this flaw by removing the vulnerable functionality. However, this may impact administrative delegation capabilities within Keycloak. A restart or reload of the Keycloak service may be required for the changes to take effect.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "keycloak: Keycloak: Privilege escalation via improper scope mapping enforcement"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Omaroo Baniessa"
          ]
        }
      ],
      "cve": "CVE-2026-9799",
      "cwe": {
        "id": "CWE-639",
        "name": "Authorization Bypass Through User-Controlled Key"
      },
      "discovery_date": "2026-05-28T03:53:15.687000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2482471"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access (UMA) permission ticket for one resource can exploit this by using a specific permission request prefix to bypass per-resource access control. This allows the user to gain unauthorized access to all resources of that type within the same resource server, even if they do not have a ticket for those specific resources. This vulnerability requires the resource server to be configured in PERMISSIVE policy enforcement mode and affects typed resources with ownerManagedAccess enabled, where no explicit policy protects the resource type. The primary consequence is unauthorized information disclosure or modification of resources.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Keycloak: Unauthorized access to resources via UMA permission ticket bypass",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A Medium severity flaw exists in Keycloak\u0027s authorization component where a user with a UMA permission ticket for a specific resource type can gain unauthorized access to all resources of that type. This bypass occurs when the resource server is configured with the non-default PERMISSIVE policy enforcement mode, has ownerManagedAccess enabled for typed resources, and lacks a covering policy for the resource type. Exploitation requires an authenticated user with an existing permission ticket, limiting its impact to specific, non-default Keycloak deployments.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9799"
        },
        {
          "category": "external",
          "summary": "RHBZ#2482471",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482471"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9799",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9799"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9799",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9799"
        }
      ],
      "release_date": "2026-05-19T12:34:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, ensure that the Keycloak client\u0027s policy enforcement mode is set to ENFORCING instead of PERMISSIVE. The PERMISSIVE mode is a non-default configuration that enables the vulnerability. Changing this setting will prevent the unauthorized access to resources of the same type. Consult Keycloak documentation for specific instructions on configuring policy enforcement mode for your client. This change may require a restart or reload of the Keycloak service to take effect and could impact existing authorization policies if not carefully managed.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: Keycloak: Unauthorized access to resources via UMA permission ticket bypass"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Bas Levering"
          ]
        }
      ],
      "cve": "CVE-2026-9800",
      "cwe": {
        "id": "CWE-1025",
        "name": "Comparison Using Wrong Factors"
      },
      "discovery_date": "2026-05-28T03:57:56.111000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2482472"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access (UMA) permission checks. By including the configured access-denied page path within a request URL, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak-policy-enforcer: Keycloak Policy Enforcer: Authorization bypass via incorrect URI comparison",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-9800"
        },
        {
          "category": "external",
          "summary": "RHBZ#2482472",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482472"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-9800",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-9800"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-9800",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9800"
        }
      ],
      "release_date": "2026-05-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "keycloak-policy-enforcer: Keycloak Policy Enforcer: Authorization bypass via incorrect URI comparison"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Bilal Teke"
          ]
        }
      ],
      "cve": "CVE-2026-11800",
      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
      },
      "discovery_date": "2026-06-09T05:06:35.697000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2487006"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to impersonate any federated user linked to the affected Identity Provider, leading to unauthorized access and potential privilege escalation.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "org.keycloak:keycloak-services: Keycloak: Authentication bypass via JWT algorithm confusion",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-11800"
        },
        {
          "category": "external",
          "summary": "RHBZ#2487006",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487006"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-11800",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-11800"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-11800",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11800"
        }
      ],
      "release_date": "2026-05-29T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "org.keycloak:keycloak-services: Keycloak: Authentication bypass via JWT algorithm confusion"
    },
    {
      "cve": "CVE-2026-44249",
      "cwe": {
        "id": "CWE-1287",
        "name": "Improper Validation of Specified Type of Input"
      },
      "discovery_date": "2026-06-11T22:02:05.327173+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488081"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in netty-handler, a component of the Netty network application framework. A remote attacker can exploit an incorrect masking operation in the IpSubnetFilterRule.compareTo() function to bypass configured IPv6 subnet rules. This allows valid public IP addresses to circumvent intended network restrictions, potentially leading to unauthorized access or exposure of services.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability in netty-handler is rated as Important because a remote attacker can bypass configured IPv6 subnet filtering rules. This flaw, stemming from an incorrect masking operation, could allow unauthorized access to or exposure of services that are intended to be network-restricted within Red Hat products utilizing the affected Netty component.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-44249"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488081",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488081"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-44249",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-44249"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44249",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44249"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-3qp7-7mw8-wx86",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-3qp7-7mw8-wx86"
        }
      ],
      "release_date": "2026-06-11T20:46:14.110000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation"
    },
    {
      "cve": "CVE-2026-44893",
      "cwe": {
        "id": "CWE-805",
        "name": "Buffer Access with Incorrect Length Value"
      },
      "discovery_date": "2026-06-12T15:01:18.066312+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488383"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in netty-codec-haproxy, a component of the Netty network application framework. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy message with a malformed PP2_TYPE_SSL TLV (Type-Length-Value) header. This can lead to an IndexOutOfBoundsException and prevent the release of retained memory, ultimately causing a Denial of Service (DoS) condition for the affected application.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-codec-haproxy: Netty-codec-haproxy: Denial of Service via malformed HAProxy message",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw is rated as Important because a remote, unauthenticated attacker can trigger a denial of service in applications utilizing `netty-codec-haproxy`. By sending a specially crafted HAProxy message with a malformed SSL TLV header, an attacker can cause an `IndexOutOfBoundsException`, leading to unreleased memory and resource exhaustion. This can render the affected application unresponsive.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-44893"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488383",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488383"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-44893",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-44893"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44893",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44893"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv"
        }
      ],
      "release_date": "2026-06-12T14:00:25.801000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-codec-haproxy: Netty-codec-haproxy: Denial of Service via malformed HAProxy message"
    },
    {
      "cve": "CVE-2026-45416",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-06-12T15:01:45.671884+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488391"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Netty, a network application framework. A remote attacker can exploit this vulnerability by sending a crafted TLS (Transport Layer Security) ClientHello message. This can lead to an eager allocation of a large memory buffer, causing a Denial of Service (DoS) due to excessive memory consumption. The issue occurs in the `SslClientHelloHandler.decode()` method when processing the TLS handshake length.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability in Netty is rated as Important. It allows a remote attacker to trigger a denial of service by sending a specially crafted TLS ClientHello message. The flaw arises from an eager, unbounded memory allocation during the TLS handshake, particularly when default configurations disable the maximum client hello length guard, leading to excessive resource consumption in affected Red Hat products utilizing Netty.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-45416"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488391",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488391"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-45416",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-45416"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-45416",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45416"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-x4gw-5cx5-pgmh",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-x4gw-5cx5-pgmh"
        }
      ],
      "release_date": "2026-06-12T14:10:05.585000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, configure applications utilizing Netty\u0027s `SslClientHelloHandler` to specify a non-zero value for the `maxClientHelloLength` parameter. This will enable the internal length validation, preventing the eager allocation of large memory buffers when processing crafted TLS ClientHello messages. Refer to your specific application\u0027s documentation for details on configuring Netty\u0027s TLS handler. A restart of the affected application or service is required for the configuration changes to take effect.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake"
    },
    {
      "cve": "CVE-2026-45674",
      "cwe": {
        "id": "CWE-346",
        "name": "Origin Validation Error"
      },
      "discovery_date": "2026-06-12T15:02:15.565158+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488400"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Netty\u0027s DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin (bailiwick) of CNAME records in DNS responses, which could enable an attacker to redirect network traffic or intercept sensitive data from affected applications.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Important severity flaw in Netty\u0027s DnsResolveContext allows a remote attacker to achieve information disclosure or data manipulation. By crafting malicious DNS responses, an attacker could redirect network traffic or intercept sensitive data, impacting applications utilizing Netty for DNS resolution in Red Hat products.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-45674"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488400",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488400"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-45674",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-45674"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-45674",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45674"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-676x-f7gg-47vc"
        }
      ],
      "release_date": "2026-06-12T14:17:50.203000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation"
    },
    {
      "cve": "CVE-2026-47691",
      "cwe": {
        "id": "CWE-346",
        "name": "Origin Validation Error"
      },
      "discovery_date": "2026-06-12T16:02:45.855856+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488439"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Netty\u0027s `DnsResolveContext`. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing standard bailiwick rules. Consequently, future DNS resolutions for the affected parent domain will use the poisoned cache, potentially redirecting users to malicious servers and leading to information disclosure or integrity compromise.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Important flaw in Netty\u0027s DNS resolution component, `netty-resolver-dns`, allows for DNS cache poisoning. An attacker with control over an authoritative name server for a subdomain could exploit this vulnerability to inject malicious DNS records into the cache of parent domains. This could lead to redirection of network traffic, impacting the integrity and availability of services relying on DNS resolution within affected Red Hat products.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-47691"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488439",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488439"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-47691",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-47691"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-47691",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47691"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-5pvg-856g-cp85",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-5pvg-856g-cp85"
        }
      ],
      "release_date": "2026-06-12T14:33:16.595000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records"
    },
    {
      "cve": "CVE-2026-48043",
      "cwe": {
        "id": "CWE-772",
        "name": "Missing Release of Resource after Effective Lifetime"
      },
      "discovery_date": "2026-06-12T16:02:56.371830+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488442"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in netty-codec-http2. A remote attacker could send specially crafted frames that cause a resource leak within the `DelegatingDecompressorFrameListener` class. This resource leak could lead to an Out Of Memory Error (OOME), potentially causing a Denial of Service (DoS) by taking down the entire Java Virtual Machine (JVM).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-codec-http2: netty-codec-http2: Denial of Service due to resource leak",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important denial of service flaw in netty-codec-http2, affecting Red Hat products that utilize HTTP/2 communication with decompression. A remote attacker can exploit a resource leak in the `DelegatingDecompressorFrameListener` by sending malformed HTTP/2 frames, potentially leading to an Out Of Memory Error and causing the Java Virtual Machine to terminate. This could disrupt service availability in affected deployments.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-48043"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488442",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488442"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-48043",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-48043"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-48043",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48043"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-c2gf-v879-257j",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-c2gf-v879-257j"
        }
      ],
      "release_date": "2026-06-12T14:39:52.498000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-codec-http2: netty-codec-http2: Denial of Service due to resource leak"
    },
    {
      "cve": "CVE-2026-48059",
      "cwe": {
        "id": "CWE-1286",
        "name": "Improper Validation of Syntactic Correctness of Input"
      },
      "discovery_date": "2026-06-12T16:02:40.032749+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488437"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Netty HAProxy PROXY protocol v2 codec. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy PROXY protocol v2 header with nested `PP2_TYPE_SSL` type-length-value (TLV) records. This can lead to a memory leak, causing the underlying cumulation buffer to remain permanently pinned and potentially resulting in a Denial of Service (DoS) due to resource exhaustion.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the Netty HAProxy PROXY protocol v2 codec, which can lead to a denial of service. A remote attacker can trigger a memory leak by sending a specially crafted HAProxy PROXY protocol v2 header with deeply nested SSL TLV records, causing resource exhaustion in affected Red Hat products that utilize this codec.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-48059"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488437",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488437"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-48059",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-48059"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-48059",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48059"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-h2qv-fj59-j46j",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-h2qv-fj59-j46j"
        }
      ],
      "release_date": "2026-06-12T14:42:44.677000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers"
    },
    {
      "cve": "CVE-2026-50010",
      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
      },
      "discovery_date": "2026-06-12T16:02:13.735675+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2488429"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Netty, a network application framework. This vulnerability allows a remote attacker to bypass hostname verification due to improper handling of user-supplied trust managers. When a client is configured with a plain X.509 Trust Manager (X509TrustManager), it fails to perform necessary hostname checks, enabling an attacker to impersonate a legitimate server. This could lead to sensitive information disclosure or man-in-the-middle attacks.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in Netty that affects Red Hat products utilizing the `netty-handler` component, including various Red Hat AMQ, Enterprise Application Platform, and OpenShift offerings. The vulnerability arises when a Netty client is configured with a plain X.509 Trust Manager, leading to a bypass of hostname verification. This oversight allows a remote attacker to perform man-in-the-middle attacks by impersonating a legitimate server, potentially compromising sensitive data.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.6.4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-50010"
        },
        {
          "category": "external",
          "summary": "RHBZ#2488429",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488429"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-50010",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-50010"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-50010",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50010"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final",
          "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-c653-97m9-rcg9",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-c653-97m9-rcg9"
        }
      ],
      "release_date": "2026-06-12T14:50:43.151000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T18:47:39+00:00",
          "details": "Before applying the update, back up your existing installation,\nincluding all applications, configuration files, databases and\ndatabase settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30083"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.6.4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass"
    }
  ]
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.