Authlib: Default JWT Bearer Grant Accepts Assertions For The Wrong Audience

Description Summary Authlib's default RFC 7523 JWT bearer grant leaves "getaudiences" empty, so "verifyclaims" only checks that an "aud" claim exists instead of requiring it to match the current authorization server's token endpoint. An attacker holding a legitimately issued JWT assertion for any...

GHSA-FCH4-3C6X-J4GC Authlib: Default JWT bearer grant accepts assertions for the wrong audience

Description Summary Authlib's default RFC 7523 JWT bearer grant leaves getaudiences empty, so verifyclaims only checks that an aud claim exists instead of requiring it to match the current authorization server's token endpoint. An attacker holding a legitimately issued JWT assertion for any...

Authlib: Default JWT bearer grant accepts assertions for the wrong audience

Description Summary Authlib's default RFC 7523 JWT bearer grant leaves getaudiences empty, so verifyclaims only checks that an aud claim exists instead of requiring it to match the current authorization server's token endpoint. An attacker holding a legitimately issued JWT assertion for any...

Keycloak 26.8.0 Token Introspection Audience Bypass

Keycloak versions 26.4.0 through 26.8.0 allow Dynamic Client Registration users to set an internal client attribute that bypasses token introspection audience checks. The supplied proof of concept details registration and introspection requests. https://packetstorm.news/download/235230...

Exploit for CVE-2026-105306

CVE-2026-105306: Token Introspection Audience Bypass via Dynam...

Keycloak 26.4.0 <= 26.8.0 Token Introspection Audience Bypass (CVE-2026-105306)

The version of Keycloak installed on the remote host is 26.4.0 through 26.8.0. It is, therefore, affected by a token introspection audience bypass vulnerability. An attacker able to use dynamic client registration can register a client that passes token introspection for tokens that were not issu...

CVE-2026-105306 Keycloak-services: keycloak-services: token introspection audience bypass via dynamic client registration

A flaw was found in the Dynamic Client Registration flow of the Keycloak identity and access management server. The issue occurs because the registration process fails to filter security-sensitive client attributes when a new client is created. An attacker with a valid Initial Access Token can...

CVE-2026-105306 Keycloak-services: keycloak-services: token introspection audience bypass via dynamic client registration

A flaw was found in the Dynamic Client Registration flow of the Keycloak identity and access management server. The issue occurs because the registration process fails to filter security-sensitive client attributes when a new client is created. An attacker with a valid Initial Access Token can...

CVE-2026-105306

A flaw exists in the Dynamic Client Registration flow of the Keycloak identity and access management server. The registration process fails to filter security-sensitive client attributes during new client creation. An attacker possessing a valid Initial Access Token can register a client that byp...

BIT-KEYCLOAK-2026-37979 Keycloak: keycloak: information disclosure via oidc token introspection endpoint audience bypass

A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect OIDC token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other...

CVE-2026-66908

Improper Authentication vulnerability in Apache Camel Platform HTTP Main component. This issue affects Apache Camel: from 4.8.0 before 4.22.0. The camel-main embedded HTTP server can protect its endpoints with JWT authentication, configured through authenticationEnabled together with the JWT...

EUVD-2026-58817

A flaw was found in Red Hat Quay's JWT JSON Web Token validation for federated robot accounts and single sign-on SSO authentication. Multiple issues related to audience verification and the enforcement of azp and sub claims were identified. These flaws could allow an attacker with a validly-signe...

CVE-2026-74240 Quay: jwt claim validation bypasses in quay federated robot and sso authentication

A flaw was found in Red Hat Quay's JWT JSON Web Token validation for federated robot accounts and single sign-on SSO authentication. Multiple issues related to audience verification and the enforcement of azp and sub claims were identified. These flaws could allow an attacker with a validly-signe...

CVE-2026-74240

A flaw was found in Red Hat Quay's JWT JSON Web Token validation for federated robot accounts and single sign-on SSO authentication. Multiple issues related to audience verification and the enforcement of azp and sub claims were identified. These flaws could allow an attacker with a validly-signe...

CVE-2026-74240

The CVE concerns Red Hat Quay’s JWT validation for federated robot accounts and SSO, where flawed audience verification and insufficient enforcement of azp and sub allow a token from the same identity provider to bypass security boundaries, potentially leading to unauthorized access where audienc...

PT-2026-72126

Name of the Vulnerable Software and Affected Versions Red Hat Quay affected versions not specified Description Red Hat Quay contains flaws in the validation of JSON Web Tokens JWT used for single sign-on SSO authentication and federated robot accounts. The issues involve improper audience...

CVE-2026-18208 Keycloak-services: keycloak-services: inactive out-of-audience token introspection leaks signed jwt claim

A flaw was found in the OIDC token introspection endpoint of the keycloak-services component. Keycloak is an open-source identity and access management solution used to secure modern applications and services. The issue occurs when a confidential client, configured to receive signed JWT...

CVE-2026-14541 Authentication Bypass and Audience Confusion in MCP Toolbox OAuth Provider

An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google mcp-toolbox version 1.4.0. When a Google authService is initialized with mcpEnabled: true but lacks an explicitly defined audience or clientId, the ValidateMCPAuth pipeline for...

PT-2026-64019

Name of the Vulnerable Software and Affected Versions Logto affected versions not specified Description Logto fails to validate the SAML element. This allows attackers to remove time and audience restrictions, which enables the indefinite replay of assertions. SAML Security Assertion Markup...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the JWKS key caching process. An attacker can gain unauthorized access to another issuer or tenant's resources by crafting a valid token for one allowed issuer and exploiting the cache...