CWE-287

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

CVE-2026-40946 (GCVE-0-2026-40946)

Vulnerability from cvelistv5 – Published: 2026-04-21 21:18 – Updated: 2026-04-22 18:11
VLAI
Title
Oxia: OIDC token audience validation bypass via SkipClientIDCheck
Summary
Oxia is a metadata store and coordination system. Prior to 0.16.2, the OIDC authentication provider unconditionally sets SkipClientIDCheck: true in the go-oidc verifier configuration, disabling the standard audience (aud) claim validation at the library level. This allows tokens issued for unrelated services by the same OIDC issuer to be accepted by Oxia. This vulnerability is fixed in 0.16.2.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
oxia-db oxia Affected: < 0.16.2
Create a notification for this product.
Show details on NVD website

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CVE-2026-40964 (GCVE-0-2026-40964)

Vulnerability from cvelistv5 – Published: 2026-06-01 21:02 – Updated: 2026-06-11 20:30
VLAI
Summary
Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log and metric for every application and platform component via minting a JWT that the cf-auth-proxy accepts as a valid logs.admin token. Affected versions: - log-cache_release: all versions through v3.2.6 (inclusive); fixed in v3.2.7 or later - CF Deployment: all versions through v55.?.0 (inclusive); fixed in v55.?.0 or later (bundles log-cache_release v3.2.7)
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
Impacted products
Show details on NVD website

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CVE-2026-40995 (GCVE-0-2026-40995)

Vulnerability from cvelistv5 – Published: 2026-06-11 05:04 – Updated: 2026-06-11 12:45
VLAI
Title
X.509 authentication bypasses Spring Security account checks
Summary
X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security's standard account lifecycle checks (disabled, locked, expired, or credentials-expired accounts). Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
Spring Spring Web Services Affected: 5.0.0 , < 5.0.2 (custom)
Affected: 4.1.0 , < 4.1.4 (custom)
Affected: 4.0.0 , < 4.0.19 (custom)
Affected: 3.1.0 , < 3.1.9 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-4101 (GCVE-0-2026-4101)

Vulnerability from cvelistv5 – Published: 2026-04-01 20:35 – Updated: 2026-04-03 13:02
VLAI
Title
Security Vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access
Summary
IBM Verify Identity Access Container 11.0 through 11.0.2 and IBM Security Verify Access Container 10.0 through 10.0.9.1 and IBM Verify Identity Access 11.0 through 11.0.2 and IBM Security Verify Access 10.0 through 10.0.9.1 under certain load conditions could allow an attacker to bypass authentication mechanisms and gain unauthorized access to the application.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7268253 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM Verify Identity Access Container Affected: 11.0 , ≤ 11.0.2 (semver)
    cpe:2.3:a:ibm:verify_identity_access_container:11.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access_container:11.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access_container:11.0.2:*:*:*:*:*:*:*
Create a notification for this product.
IBM Security Verify Access Container Affected: 10.0 , ≤ 10.0.9.1 (semver)
    cpe:2.3:a:ibm:security_verify_access_container:10.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access_container:10.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access_container:10.0.9.1:*:*:*:*:*:*:*
Create a notification for this product.
IBM Verify Identity Access Affected: 11.0 , ≤ 11.0.2 (semver)
    cpe:2.3:a:ibm:verify_identity_access:11.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access:11.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:verify_identity_access:11.0.2:*:*:*:*:*:*:*
Create a notification for this product.
IBM Security Verify Access Affected: 10.0 , ≤ 10.0.9.1 (semver)
    cpe:2.3:a:ibm:security_verify_access:10.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access:10.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:security_verify_access:10.0.9.1:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-41070 (GCVE-0-2026-41070)

Vulnerability from cvelistv5 – Published: 2026-05-08 15:14 – Updated: 2026-05-08 16:05
VLAI
Title
openvpn-auth-oauth2 returns FUNC_SUCCESS on client-deny, allowing unauthenticated VPN access
Summary
openvpn-auth-oauth2 is a plugin/management interface client for OpenVPN server to handle an OIDC based single sign-on (SSO) auth flows. From version 1.26.3 to before version 1.27.3, when openvpn-auth-oauth2 is deployed in the experimental plugin mode (shared library loaded by OpenVPN via the plugin directive), clients that do not support WebAuth/SSO (e.g., the openvpn CLI on Linux) are incorrectly admitted to the VPN despite being denied by the authentication logic. The default management-interface mode is not affected because it does not use the OpenVPN plugin return-code mechanism. This issue has been patched in version 1.27.3.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
jkroepke openvpn-auth-oauth2 Affected: >= 1.26.3, < 1.27.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-41076 (GCVE-0-2026-41076)

Vulnerability from cvelistv5 – Published: 2026-05-22 21:36 – Updated: 2026-05-28 03:55
VLAI
Title
RT: LDAP authentication bypass via empty password
Summary
RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.9 and prior in addition to 6.0.0 through 6.0.2 contain an authentication bypass vulnerability in RT installations that use LDAP/AD for user authentication. Under certain LDAP server configurations, an attacker may be able to authenticate as any LDAP-backed RT user without supplying valid credentials. This issue has been fixed in versions 5.0.10 and 6.0.3. If developers are unable to upgrade immediately, they can temporarily work around this issue by reviewing their LDAP server's authentication policy to ensure it rejects unauthenticated bind attempts. Upgrading RT remains the recommended fix.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
Impacted products
Vendor Product Version
bestpractical rt Affected: < 5.0.10
Affected: >= 6.0.0, < 6.0.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-41081 (GCVE-0-2026-41081)

Vulnerability from cvelistv5 – Published: 2026-04-27 13:10 – Updated: 2026-04-27 14:43
VLAI
Title
Apache Storm Client: Anonymous principal assigned on TLS client certificate verification failure
Summary
Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication (the default configuration), the TlsTransportPlugin assigns a fallback principal (CN=ANONYMOUS) if no client certificate is presented or if certificate verification fails. The underlying SSLPeerUnverifiedException is caught and suppressed rather than rejecting the connection. This fail-open behavior means an unauthenticated client can establish a TLS connection and receive a valid principal identity. If the configured authorizer (e.g., SimpleACLAuthorizer) does not explicitly deny access to CN=ANONYMOUS, this may result in unauthorized access to Storm services. The condition is logged at debug level only, reducing visibility in production. Impact: Unauthenticated clients may be assigned a principal identity, potentially bypassing authorization in permissive or misconfigured environments. Mitigation: Users should upgrade to 2.8.7 in which TLS authentication failures are handled in a fail-closed manner. Users who cannot upgrade immediately should: - Enable mandatory client certificate authentication (nimbus.thrift.tls.client.auth.required: true) - Ensure authorization rules explicitly deny access to CN=ANONYMOUS - Review all ACL configurations for implicit default-allow behavior
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
Impacted products
Credits
K
Show details on NVD website

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CVE-2026-41145 (GCVE-0-2026-41145)

Vulnerability from cvelistv5 – Published: 2026-04-22 00:54 – Updated: 2026-04-22 14:21
VLAI
Title
MinIO has an Unauthenticated Object Write via Query-String Credential Signature Bypass in Unsigned-Trailer Uploads
Summary
MinIO is a high-performance object storage system. Starting in RELEASE.2023-05-18T00-05-36Z and prior to RELEASE.2026-04-11T03-20-12Z, an authentication bypass vulnerability in MinIO's `STREAMING-UNSIGNED-PAYLOAD-TRAILER` code path allows any user who knows a valid access key to write arbitrary objects to any bucket without knowing the secret key or providing a valid cryptographic signature. Any MinIO deployment is impacted. The attack requires only a valid access key (the well-known default `minioadmin`, or any key with WRITE permission on a bucket) and a target bucket name. `PutObjectHandler` and `PutObjectPartHandler` call `newUnsignedV4ChunkedReader` with a signature verification gate based solely on the presence of the `Authorization` header. Meanwhile, `isPutActionAllowed` extracts credentials from either the `Authorization` header or the `X-Amz-Credential` query parameter, and trusts whichever it finds. An attacker omits the `Authorization` header and supplies credentials exclusively via the query string. The signature gate evaluates to `false`, `doesSignatureMatch` is never called, and the request proceeds with the permissions of the impersonated access key. This affects `PutObjectHandler` (standard and tables/warehouse bucket paths) and `PutObjectPartHandler` (multipart uploads). Users of the open-source `minio/minio` project should upgrade to MinIO AIStor `RELEASE.2026-04-11T03-20-12Z` or later. If upgrading is not immediately possible, block unsigned-trailer requests at the load balancer. Reject any request containing `X-Amz-Content-Sha256: STREAMING-UNSIGNED-PAYLOAD-TRAILER` at the reverse proxy or WAF layer. Clients can use `STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER` (the signed variant) instead. Alternatively, restrict WRITE permissions. Limit `s3:PutObject` grants to trusted principals. While this reduces the attack surface, it does not eliminate the vulnerability since any user with WRITE permission can exploit it with only their access key.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
Impacted products
Vendor Product Version
minio minio Affected: >= RELEASE.2023-05-18T00-05-36Z, < RELEASE.2026-04-11T03-20-12Z
Create a notification for this product.
Show details on NVD website

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CVE-2026-41276 (GCVE-0-2026-41276)

Vulnerability from cvelistv5 – Published: 2026-04-23 19:49 – Updated: 2026-04-24 18:20
VLAI
Title
Flowise: AccountService resetPassword Authentication Bypass Vulnerability
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, this vulnerability allows remote attackers to bypass authentication on affected installations of FlowiseAI Flowise. Authentication is not required to exploit this vulnerability. The specific flaw exists within the resetPassword method of the AccountService class. There is no check performed to ensure that a password reset token has actually been generated for a user account. By default the value of the reset token stored in a users account is null, or an empty string if they've reset their password before. An attacker with knowledge of the user's email address can submit a request to the "/api/v1/account/reset-password" endpoint containing a null or empty string reset token value and reset that user's password to a value of their choosing. This vulnerability is fixed in 3.1.0.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.1.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-41428 (GCVE-0-2026-41428)

Vulnerability from cvelistv5 – Published: 2026-04-24 19:17 – Updated: 2026-04-24 20:00
VLAI
Title
Budibase: Authentication Bypass via Unanchored Regex in Public Endpoint Matcher — Unauthenticated Access to Protected Endpoints
Summary
Budibase is an open-source low-code platform. Prior to 3.35.4, the authenticated middleware uses unanchored regular expressions to match public (no-auth) endpoint patterns against ctx.request.url. Since ctx.request.url in Koa includes the query string, an attacker can access any protected endpoint by appending a public endpoint path as a query parameter. For example, POST /api/global/users/search?x=/api/system/status bypasses all authentication because the regex /api/system/status/ matches in the query string portion of the URL. This vulnerability is fixed in 3.35.4.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
Budibase budibase Affected: < 3.35.4
Create a notification for this product.
Show details on NVD website

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Mitigation

Phase: Architecture and Design

Strategy: Libraries or Frameworks

Description:

  • Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
CAPEC-114: Authentication Abuse

An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.

CAPEC-115: Authentication Bypass

An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.

CAPEC-151: Identity Spoofing

Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.

CAPEC-194: Fake the Source of Data

An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.

CAPEC-22: Exploiting Trust in Client

An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.

CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data

This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.

CAPEC-593: Session Hijacking

This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.

CAPEC-633: Token Impersonation

An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.

CAPEC-650: Upload a Web Shell to a Web Server

By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.

CAPEC-94: Adversary in the Middle (AiTM)

An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.

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