Description


ZITADEL 4.0.0 before 4.19.5 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to set the first credential of users lacking any authentication method. Attackers can compute a valid verificationCheck cookie from the user ID and browser fingerprint to set a password, register a passkey, or link an identity provider, taking over the account.

Related CPE's


Could not find any relations

Weaknesses



CWE-565

CVSS impact metrics


CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

7.4 · High

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-29T16:18:05.643Z

14 hours ago

Last modified

2026-10-29T16:18:05.760Z

14 hours ago