GitHub Advisoryadvisory · Maven

GHSA-7g5x-9c4v-4w5r Keycloak REST Services has a WebAuthn Attestation Statement Verification Bypass

LOW Published 2026-02-27 Modified 2026-02-28 Official page ↗
Aliases
CVE-2025-12150
Ecosystem
Maven
Packages
org.keycloak:keycloak-services
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Weaknesses
CWE-347
Reviewed
2026-02-28

Affected packages

• Maven org.keycloak:keycloak-services: < 26.4.4 → fixed in 26.4.4

Description

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.

Related

Alias · CVE (1)

  • CVE-2025-12150 A flaw was found in Keycloak’s WebAuthn registration component. vulnerability

Weakness · CWE (1)

  • CWE-347 Improper Verification of Cryptographic Signature weakness

References