Vulnerability-Lookup

CVE-2026-7504 (GCVE-0-2026-7504)

Vulnerability from cvelistv5 – Published: 2026-05-19 11:01 – Updated: 2026-07-15 00:39

Title

Org.keycloak/keycloak-services: open redirect when using wildcard valid redirect uris in keycloak

Summary

A flaw was found in Keycloak's URL validation logic during redirect operations. By crafting a malicious request, an attacker could bypass validation to redirect users to unauthorized URLs, potentially leading to the exposure of sensitive information within the domain or facilitating further attacks. This vulnerability specifically affects Keycloak clients configured with a wildcard (*) in the "Valid Redirect URIs" field and requires user interaction to be successfully exploited. The issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java's URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak's validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-19 12:22 UTC

CWE

CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Assigner

redhat redhat root

References

7 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:19594	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19595	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19596	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19597	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-7504	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2464128	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

8 products

Vendor	Product	Version
Red Hat	Red Hat build of Keycloak 26.2	Unaffected: 26.2.16-1 , < * (rpm) cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat	Red Hat build of Keycloak 26.2	Unaffected: 26.2-21 , < * (rpm) cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat	Red Hat build of Keycloak 26.2.16	cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat	Red Hat build of Keycloak 26.4	Unaffected: 26.4.12-1 , < * (rpm) cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat	Red Hat build of Keycloak 26.4	Unaffected: 26.4-17 , < * (rpm) cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat	Red Hat build of Keycloak 26.4.12	cpe:/a:redhat:build_keycloak:26.4::el9
Red Hat	Red Hat build of Keycloak 26.2.16	Unaffected: rhel9-operator , < * (rpm) cpe:/a:redhat:build_keycloak:26.2::el9
Red Hat	Red Hat build of Keycloak 26.4.12	Unaffected: rhel9-operator , < * (rpm) cpe:/a:redhat:build_keycloak:26.4::el9

Date Public

2026-05-19 10:52

Credits

Red Hat would like to thank Duarte Antunes (Intapp) and João Mendes (Intapp) for reporting this issue.

Show details on NVD website

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This vulnerability specifically affects Keycloak clients configured with a wildcard (*) in the \\\"Valid Redirect URIs\\\" field and requires user interaction to be successfully exploited.\\n\\nThe issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java\u0027s URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak\u0027s validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-601\", \"description\": \"URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-05-20T15:48:19.026Z\"}, \"x_redhatCweChain\": \"CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-7504\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-15T00:39:58.049Z\", \"dateReserved\": \"2026-04-30T14:48:04.317Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-05-19T11:01:19.663Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
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}

bit-keycloak-2026-7504

Vulnerability from bitnami_vulndb

Published

2026-08-25 11:42

Modified

2026-09-08 08:34

Summary

Org.keycloak/keycloak-services: open redirect when using wildcard valid redirect uris in keycloak

Details

The issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java's URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak's validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "keycloak",
        "purl": "pkg:bitnami/keycloak"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "26.4.0"
            },
            {
              "fixed": "26.4.12"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-7504"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*",
      "cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "A flaw was found in Keycloak\u0027s URL validation logic during redirect operations. By crafting a malicious request, an attacker could bypass validation to redirect users to unauthorized URLs, potentially leading to the exposure of sensitive information within the domain or facilitating further attacks. This vulnerability specifically affects Keycloak clients configured with a wildcard (*) in the \"Valid Redirect URIs\" field and requires user interaction to be successfully exploited.\n\nThe issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java\u0027s URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak\u0027s validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect.",
  "id": "BIT-keycloak-2026-7504",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-08-25T11:42:35.202Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:19594"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:19595"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:19596"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:19597"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-7504"
    },
    {
      "type": "ADVISORY",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464128"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7504"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7504.json"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Org.keycloak/keycloak-services: open redirect when using wildcard valid redirect uris in keycloak"
}

FKIE_CVE-2026-7504

Vulnerability from fkie_nvd - Published: 2026-05-19 12:16 - Updated: 2026-07-15 01:17

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Summary

References

URL	Tags
secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:19594	Vendor Advisory
secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:19595	Vendor Advisory
secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:19596	Vendor Advisory
secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:19597	Vendor Advisory
secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-7504	Vendor Advisory
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2464128	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:19594	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:19595	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:19596	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:19597	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-7504	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2464128	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7504.json

Impacted products

	Vendor	Product	Version
	redhat	build_of_keycloak	*

JSON

To clipboard

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  "configurations": [
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  "id": "CVE-2026-7504",
  "lastModified": "2026-07-15T01:17:00.400",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
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          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-7504",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-19T12:22:24.698680Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-19T12:16:19.553",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19594"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19595"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19596"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19597"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/security/cve/CVE-2026-7504"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464128"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19594"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19595"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19596"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/errata/RHSA-2026:19597"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/security/cve/CVE-2026-7504"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464128"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7504.json"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-RP95-XPG9-C2CQ

Vulnerability from github – Published: 2026-05-19 12:31 – Updated: 2026-06-04 15:38

Summary

Keycloak: Open redirect when using wildcard valid redirect URIs in Keycloak

Details

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-7504"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-04T15:38:01Z",
    "nvd_published_at": "2026-05-19T12:16:19Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in Keycloak\u0027s URL validation logic during redirect operations. By crafting a malicious request, an attacker could bypass validation to redirect users to unauthorized URLs, potentially leading to the exposure of sensitive information within the domain or facilitating further attacks. This vulnerability specifically affects Keycloak clients configured with a wildcard (*) in the \"Valid Redirect URIs\" field and requires user interaction to be successfully exploited.\n\nThe issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java\u0027s URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak\u0027s validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect.",
  "id": "GHSA-rp95-xpg9-c2cq",
  "modified": "2026-06-04T15:38:01Z",
  "published": "2026-05-19T12:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7504"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/pull/49130"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/479620769073ac36b782dee65086ab35e8e5d14e"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:19594"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:19595"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:19596"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:19597"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-7504"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464128"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/releases/tag/26.6.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak: Open redirect when using wildcard valid redirect URIs in Keycloak"
}

RHSA-2026:19594

Vulnerability from csaf_redhat - Published: 2026-05-20 11:23 - Updated: 2026-08-26 16:35

Summary

Red Hat Security Advisory: Red Hat build of Keycloak 26.2.16 Security Update

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-7504.

CVE-2026-7504

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:19594

Open the full advisory

RHSA-2026:19595

Vulnerability from csaf_redhat - Published: 2026-05-20 11:23 - Updated: 2026-08-26 16:35

Summary

Red Hat Security Advisory: Red Hat build of Keycloak 26.2.16 Images Security Update

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-7504.

CVE-2026-7504

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Fixed: 9 products

https://access.redhat.com/errata/RHSA-2026:19595

Open the full advisory

RHSA-2026:19596

Vulnerability from csaf_redhat - Published: 2026-05-20 11:23 - Updated: 2026-09-04 16:25

Summary

Red Hat Security Advisory: Red Hat build of Keycloak 26.4.12 Security Update

Severity

Important

Scope

10 vulnerabilities in this advisory, including CVE-2026-7504.

CVE-2026-7504

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:19596

Open the full advisory

RHSA-2026:19597

Vulnerability from csaf_redhat - Published: 2026-05-20 11:23 - Updated: 2026-08-31 02:00

Summary

Red Hat Security Advisory: Red Hat build of Keycloak 26.4.12 Images Security Update

Severity

Important

Scope

10 vulnerabilities in this advisory, including CVE-2026-7504.

CVE-2026-7504

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Fixed: 9 products

https://access.redhat.com/errata/RHSA-2026:19597

Open the full advisory

WID-SEC-W-2026-1612

Vulnerability from csaf_certbund - Published: 2026-05-19 22:00 - Updated: 2026-05-19 22:00

Summary

Keycloak: Mehrere Schwachstellen

Severity

Hoch

Scope

9 vulnerabilities in this advisory, including CVE-2026-7504.

CVE-2026-7504

Known affected: 2 products

Open the full advisory

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-7504 (GCVE-0-2026-7504)

Vulnerability from bitnami_vulndb

Tags

Sightings

Nomenclature