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All security reports
NVD security advisoryCritical

Critical advisory for ZITADEL 4.0.0

CVE-2026-119128 · Reported 29 Oct 2026

Full advisory details, affected packages, severity context, and original source.

Affected technology

ZITADEL 4.0.0Affected product

Advisory overview

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 references

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