A flaw was found in the RoleContainerResource component of Keycloak. The issue occurs because certain name-based endpoints in the admin REST API do not properly enforce authorization checks when managing composite roles. This allows a delegated administrator with manage-realm permissions to remove essential child roles from built-in admin roles, potentially disrupting administrative functions within a realm.
Exploitability
AV:NAC:LPR:HUI:NScope
S:UImpact
C:NI:HA:N4.9/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NOther