CVE-2025-12150 (GCVE-0-2025-12150)

Vulnerability from cvelistv5 – Published: 2026-02-27 08:10 – Updated: 2026-02-27 08:10
VLAI?
Title
Org.keycloak/keycloak-services: webauthn attestation statement verification bypass
Summary
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.
Severity ?
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
Keycloak keycloak Affected: 0 , < 26.4.4 (semver)
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    Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2.11-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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    Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2-12 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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    Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2-12 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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    Red Hat Red Hat build of Keycloak 26.2.11     cpe:/a:redhat:build_keycloak:26.2::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.4-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-3 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-3 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4.4     cpe:/a:redhat:build_keycloak:26.4::el9
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Credits
Red Hat would like to thank Stefan Kunz (cnlab) for reporting this issue.
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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