Low [CVE-2025-12150] Org.keycloak/keycloak-services: webauthn attestation statement verification bypass
This low-severity Red Hat Linux advisory covers CVE-2025-12150 affecting Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.4.
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
A flaw was found in Keycloak’s WebAuthn registration component. This vulnerability allows an attacker to bypass the configured attestation policy and register untrusted or forged authenticators via submission of an attestation object with fmt: "none", even when the realm is configured to require direct attestation.
This can lead to weakened authentication integrity and unauthorized authenticator registration.
Affected products named by the advisory: Red Hat build of Keycloak 26.2; Red Hat build of Keycloak 26.4.
- keycloak before 26.4.4
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Mitigation
Upgrade to a fixed release: 26.4.4. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.