Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.11 Update

New Red Hat build of Keycloak 26.4.11 packages are available from the Customer Portal Red Hat build of Keycloak 26.4.11 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security...

CVE-2026-4282

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...