CVE-2026-16105: Red Hat Build Of Keycloak

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Build Of Keycloak: affected versions not specified

Published 2026-07-31. Last modified 2026-09-16.