CVE-2025-12150 Org.keycloak/keycloak-services: webauthn attestation statement verification bypass
Attackers can bypass WebAuthn attestation policies to register forged authenticators, weakening authentication integrity in Keycloak deployments requiring direct attestation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-12150?
CVE-2025-12150 is a low-severity vulnerability in Redhat Build of Keycloak, published on 27 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-347
Which versions are affected by CVE-2025-12150?
3 open source packages ship an affected version, including org.keycloak:keycloak-services and keycloak. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
org.keycloak:keycloak-services Maven | All versions | 26.4.4 |
org.keycloak:keycloak-services Maven | All versions | 26.4.4 |
keycloak Bitnami | All versions | 26.4.4 |
Products include Redhat Build of Keycloak, Redhat Keycloak.
How do I fix CVE-2025-12150?
Upgrade org.keycloak:keycloak-services to 26.4.4 or later.
Is CVE-2025-12150 being exploited?
There is no known exploitation of CVE-2025-12150 in the wild and no public exploit code.
Other vulnerabilities in Redhat Build of Keycloak
- CVE-2026-15572 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation
- CVE-2026-3047 Keycloak SAML Broken has Authentication Bypass by Primary Weakness
- CVE-2026-15573 Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher
- CVE-2026-16102 Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers
- CVE-2026-1609 Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users
Sources
Also known as BIT-keycloak-2025-12150, ECHO-c92c-0613-1aed, GHSA-7g5x-9c4v-4w5r, MINI-gh49-7c8h-vcmc, MINI-q54v-m94x-cg3p.