GHSA-32h4-44jj-c5vx Keycloak has privilege escalation via improper scope mapping enforcement

• Maven org.keycloak:keycloak-services: < 26.6.4 → fixed in 26.6.4

Description A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.