CVE-2026-37979

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-2026-37979

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...

GHSA-83C4-FFJP-MXP9 Keycloak: Revoked Tokens Can Remain Active When Both Realm-Level and Client-Level `notBefore` Revocation Policies are Configured

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

Keycloak: Revoked Tokens Can Remain Active When Both Realm-Level and Client-Level `notBefore` Revocation Policies are Configured

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

CVE-2026-8922

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

CVE-2026-8922 Org.keycloak/keycloak-services: keycloak: org.keycloak.protocol.oidc: security flaw in org.keycloak/keycloak-services

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

CVE-2026-8922 Org.keycloak/keycloak-services: keycloak: org.keycloak.protocol.oidc: security flaw in org.keycloak/keycloak-services

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

EUVD-2026-30843

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect OIDC Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially...

PT-2026-41881

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A security control intended to disable the implicit flow in OpenID Connect OIDC clients can be bypassed. A low-privilege user with knowledge of user credentials and client ID can manipulate...

PT-2026-41870

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description An access control flaw exists in the OpenID Connect OIDC token introspection endpoint. This issue allows a confidential client with valid credentials to bypass audience restrictions and...

Keycloak Access Control Vulnerability

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has a security vulnerability related to access control. This vulnerability stems from an access control flaw within the OpenID Connect token, allowing confidential clients to bypass audience...

Keycloak security vulnerabilities

Keycloak is an open-source identity and access management solution developed by Keycloak itself. Keycloak has a security vulnerability, which stems from the improper application of the OIDC bypass feature in the domain-level notBefore policy. This vulnerability may cause revoked tokens to remain...

CVE-2026-37979: Improper Access Control

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...

CLSA-2026-1778881463 ipa: Fix of 3 CVEs

CVE-2023-5455: fix CSRF vulnerability by adding Referer header check to all session endpoints - CVE-2024-1481: validate Kerberos principal name before kinit and pass it with -- separator to prevent option injection - CVE-2024-11029: scrub administrative passwords from process command line and...

Improper Authentication

github.com/openbao/openbao is vulnerable to improper authentication. The vulnerability is due to missing user confirmation during JWT/OIDC authentication when using callbackmode=direct, which allows an attacker to initiate a malicious authentication request and trick a victim into automatically...

CVE-2026-44428

The CVE-2026-44428 issue affects the MCP Registry’s GitHub OIDC token flow: before 1.7.6, both client and server validate a shared audience string (audience=mcp-registry) across registry deployments, enabling a token obtained for one registry to be replayed against another. This breaks deployment...

CVE-2026-44428 MCP Registry: GitHub OIDC tokens replayable across registry deployments due to shared audience

The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.6, the client-side and server-side GitHub OIDC flow is bound only to a global audience string, not to the specific registry instance being targeted. On the client side, the publisher...

CVE-2026-44501

DataHub is an open-source metadata platform. Prior to 1.5.0.3, The DataHub frontend datahub-frontend-react deserializes attacker-controlled Java objects from the REDIRECTURL HTTP cookie during the OIDC callback flow, with no integrity protection no HMAC, no encryption. This is a Deserialization o...

EUVD-2026-30321

DataHub is an open-source metadata platform. Prior to 1.5.0.3, The DataHub frontend datahub-frontend-react deserializes attacker-controlled Java objects from the REDIRECTURL HTTP cookie during the OIDC callback flow, with no integrity protection no HMAC, no encryption. This is a Deserialization o...

CVE-2026-44501

DataHub frontend (datahub-frontend-react) prior to 1.5.0.3 deserializes attacker-controlled Java objects from the REDIRECT_URL cookie during the OIDC callback (GET /callback/oidc) with no integrity protection. This CWE-502 Deserialization of Untrusted Data vulnerability requires a valid user acco...