BIT-KEYCLOAK-2026-4636 Keycloak: keycloak: uma policy bypass allows authenticated users to gain unauthorized access to victim-owned resources.

A flaw was found in Keycloak. An authenticated user with the umaprotection role can bypass User-Managed Access UMA policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned...

CVE-2026-4636

A flaw was found in Keycloak. An authenticated user with the umaprotection role can bypass User-Managed Access UMA policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned...

CVE-2026-4636: Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

A flaw was found in Keycloak. An authenticated user with the umaprotection role can bypass User-Managed Access UMA policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned...

CVE-2026-3190

A flaw was found in Keycloak. The User-Managed Access UMA 2.0 Protection API endpoint for permission tickets fails to enforce the "umaprotection" role check. This allows any authenticated user with a token issued for a resource server client, even without the "umaprotection" role, to enumerate al...

Keycloak security vulnerabilities

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has a security vulnerability, which stems from the fact that the UMA 2.0 Protection API endpoint does not enforce role checks for the umaprotection role, potentially leading to information leaks...