CVE-2025-12150

Fixed upstream EPSS <1%CVSS 3.1

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.

Published 2026-02-27 · CVE record · OSV

Products: keycloak, Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.2.11, Red Hat build of Keycloak 26.4, Red Hat build of Keycloak 26.4.4

Fixed upstream

Distro releases