Threats Tagged 'cve-2026-9796'

Multiple critical security vulnerabilities have been identified in Red Hat build of Keycloak 26.6.6 images used within OpenShift Container Platform. These include privilege escalation via a TOCTOU vulnerability, unauthenticated account takeover, leakage of rotated client secrets, predictable account-linking hashes enabling account takeover, and unauthorized disclosure of hidden group metadata. Red Hat has released updated container images to address these issues for on-premise and private cloud deployments.

Red Hat has issued a critical security update for its build of Keycloak 26.6.6, addressing multiple vulnerabilities including privilege escalation via a TOCTOU flaw, unauthenticated account takeover, information disclosure, and predictable hashes enabling account takeover. The update fixes five CVEs affecting authentication and authorization components. Users are advised to back up their installations before applying the update.

A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to `realm-admin` for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots.