BIT-KEYCLOAK-2026-16093 Keycloak-services: keycloak-services: required signed-jwt assertion policy can be bypassed with unsigned assertion headers

Keycloak provides a mechanism called Client Policies to enforce security requirements on clients, such as requiring them to use signed JWTs for authentication. A flaw was discovered where this enforcement can be bypassed. An attacker with valid client credentials can provide a fake, unsigned...

CVE-2026-18573

Summary: The CVE-2026-18573 affects the keycloak-services component of Keycloak. The root cause is improper evaluation of client state during a realm update, allowing a user with client management permissions to bypass client policies by first creating a public client and then upgrading it to a c...

EUVD-2026-51924

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates...

CVE-2026-18570

CVE-2026-18570 affects the Red Hat Build of Keycloak (keycloak-services) where the full-scope-disabled client-policy executor only validates the fullScopeAllowed field if present. Omission of this field allows a delegated user to bypass policy, creating a client with full scope access and enablin...

CVE-2026-18570

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates...

PT-2026-67135

Name of the Vulnerable Software and Affected Versions Red Hat Build of Keycloak affected versions not specified Description A flaw exists in the full-scope-disabled client-policy executor within the keycloak-services component, which enforces security policies during client registration and...

CVE-2026-18211

A flaw was found in the secure-client-uris client policy executor within Keycloak core services. This component is responsible for enforcing security requirements on client configurations, such as requiring encrypted connections for redirect URIs. Due to an improper check that only looks at the...

CVE-2026-18206

CVE-2026-18206 affects Keycloak’s keycloak-services component. A realm administrator using a wildcard domain (for example, *.example.com) to restrict hosts that can register or update clients is bypassable due to improper validation: any hostname ending with the domain suffix is accepted even if ...

Missing Authorization

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Missing Authorization due to the full-scope-disabled client-policy executor. An attacker can create a client...

Missing Authorization

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Missing Authorization during client update handling. An attacker can persist a confidential client that does...

EUVD-2026-50214

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a...

CVE-2026-18207 Keycloak-services: keycloak-services: client policy source-group condition bypass via duplicate group name matching

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a...

CVE-2026-18207

CVE-2026-18207 : Keycloak-services suffers a group-name based membership check bug in the client policy enforcement, allowing an attacker with client-management privileges to bypass security hardening by joining a differently-nested group with the same name. This can enable registering or updatin...

CVE-2026-18207 Keycloak-services: keycloak-services: client policy source-group condition bypass via duplicate group name matching

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a...

Improperly Implemented Security Check for Standard

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard through the secure-client-uris client policy executor in t...

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

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

Technical details are not publicly available in the provided documents. Monitor for updates from Red Hat and ENISA; no affected versions, exploit information, or mitigations are stated here.