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 ?
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
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Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Keycloak | keycloak |
Affected:
0 , < 26.4.4
(semver)
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Credits
Red Hat would like to thank Stefan Kunz (cnlab) for reporting this issue.
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- 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.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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