BIT-AUTHENTIK-2026-54730 authentik: Authentication Flow Bypass via Unguarded challenge_valid() in AuthenticatorEndpointGDTCStage and GoogleChromeStageView

authentik is an open-source identity provider. Prior to 2026.2.6 and 2026.5.5, the enterprise Google Chrome device-trust stages advance the flow without confirming that the out-of-band device attestation actually ran. Affected enterprise deployments place either a Google Chrome Endpoint stage wit...

CVE-2026-54730

In authentik, the AuthenticatorEndpointGDTCStage and GoogleChromeStageView components fail to verify that the out-of-band device attestation completed before advancing the authentication flow. An attacker who reaches a REQUIRED Chrome device-trust stage can skip the verification iframe and authen...

CVE-2026-54730 authentik: Authentication Flow Bypass via Unguarded challenge_valid() in AuthenticatorEndpointGDTCStage and GoogleChromeStageView

authentik is an open-source identity provider. Prior to 2026.2.6 and 2026.5.5, the enterprise Google Chrome device-trust stages advance the flow without confirming that the out-of-band device attestation actually ran. Affected enterprise deployments place either a Google Chrome Endpoint stage wit...