CVE-2026-119128
HIGH
NVD
CVSS Score
7.4
Severity
HIGH
Published
Oct 29, 2026
Vendor
unknown
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.