CRITICAL 9.1 NVD
CVE-2026-119128
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
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.
References
- https://github.com/zitadel/zitadel/security/advisories/GHSA-84fg-x5h4-w8xv
- https://www.vulncheck.com/advisories/zitadel-4.0.0-before-4.19.5-login-v2-account-takeover
This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-10-29 via NVD.
Risk Timeline
CVE Disclosed2026-10-29 · -1 days ago
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