CVE-2026-9799 Keycloak: keycloak: unauthorized access to resources via uma permission ticket bypass

A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access UMA permission ticket for one resource can exploit this by using a specific permission request prefix to bypass per-resource access control. This allows the user to gain unauthorized access to...

PT-2026-52509

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw in org.keycloak.authorization allows an authenticated user who possesses a User-Managed Access UMA permission ticket for a single resource to bypass per-resource access control. By...