CVE-2025-12150 LOW

CVE-2025-12150: Org.keycloak/keycloak-services: webauthn attestation statement verification bypass

Vendor Keycloak
Product keycloak
Weakness CWE-347
Published February 27, 2026
Last update March 6, 2026

CVSS base score

3.1/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 27, 2026 CVE published
March 6, 2026 Record updated