EUVD-2026-30841
GHSA-g8vr-x4qh-25qg
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
1DescriptionNVD
A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's parameters, such as public key algorithms, match the realm's configured WebAuthn policies. This could lead to the creation of credentials that do not adhere to administrative security requirements, potentially weakening the overall security posture of the system by allowing non-compliant authentication methods.
AnalysisAI
WebAuthn policy enforcement bypass in Red Hat Build of Keycloak allows low-privileged authenticated users to register credentials that violate administrator-configured realm security policies. The server-side processAction() method does not validate that newly registered WebAuthn credential parameters - such as public key algorithms - conform to the realm's defined WebAuthn policies, enabling a user to manipulate client-side JavaScript during the registration flow to submit non-compliant credential data. …
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