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GHSA-7g5x-9c4v-4w5r

Keycloak REST Services has a WebAuthn Attestation Statement Verification Bypass

Source: GitHub Advisory Database (reviewed) Low CVE-2025-12150

Packages

EcosystemPackageAffectedFixed in
Maven org.keycloak:keycloak-services < 26.4.4 26.4.4

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.