CVE-2026-3121: Red Hat Build Of Keycloak

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

A flaw was found in Keycloak. An administrator with `manage-clients` permission can exploit a misconfiguration where this permission is equivalent to `manage-permissions`. This allows the administrator to escalate privileges and gain control over roles, users, or other administrative functions within the realm. This privilege escalation can occur when admin permissions are enabled at the realm level.

Affected products

• Red Hat Build Of Keycloak: affected versions not specified
• Red Hat JBoss Enterprise Application Platform: version 8.0.0 only
• Red Hat JBoss Enterprise Application Platform Expansion Pack: affected versions not specified
• Red Hat Single Sign-On: version 7.0 only

Published 2026-03-26. Last modified 2026-06-17.