Low severityNVD Advisory· Published Feb 27, 2026· Updated Mar 6, 2026
Org.keycloak/keycloak-services: webauthn attestation statement verification bypass
CVE-2025-12150
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.keycloak:keycloak-servicesMaven | < 26.4.4 | 26.4.4 |
Affected products
4- Red Hat/Red Hat build of Keycloak 26.2.11v5cpe:/a:redhat:build_keycloak:26.2::el9
- cpe:/a:redhat:build_keycloak:26.4::el9
Patches
Vulnerability mechanics
References
11- access.redhat.com/errata/RHSA-2025:21370ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2025:21371ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2025:22088ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2025:22089ghsavendor-advisoryx_refsource_REDHATWEB
- github.com/advisories/GHSA-7g5x-9c4v-4w5rghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-12150ghsaADVISORY
- access.redhat.com/security/cve/CVE-2025-12150ghsavdb-entryx_refsource_REDHATWEB
- bugzilla.redhat.com/show_bug.cgighsaissue-trackingx_refsource_REDHATWEB
- github.com/keycloak/keycloak/commit/4136a677e7e24f6685ed25567e191e1003200339ghsaWEB
- github.com/keycloak/keycloak/issues/35110ghsaWEB
- github.com/keycloak/keycloak/issues/43723ghsaWEB
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