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Findings

CVE-2025-12150

A flaw was found in Keycloak’s WebAuthn registration component.

Published Feb 27, 2026 · updated Aug 10, 2026 · redhat build of keycloak

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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 27, 2026 · NIST NVD

    Detected

    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 r

  2. Aug 10, 2026 · NIST NVD

    Updated

    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 r

Affected

  • cpe redhat/build of keycloakversion unspecified
  • cpe redhat/keycloak24.0.2

Sources

  • CVE.orgVulnerability recordCVE-2025-12150

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2025-12150

    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 confi

    nvd.nist.gov

References