CVE-2026-119128 ZITADEL 4.0.0 before 4.19.5 Login V2 Account Takeover via Forgeable verificationCheck Cookie
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-119128?
CVE-2026-119128 is a critical vulnerability in zitadel, published on 29 Oct 2026.
Official 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.
Weakness: CWE-565
Which versions are affected by CVE-2026-119128?
How do I fix CVE-2026-119128?
No fix has been published for CVE-2026-119128 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-119128 being exploited?
There is no known exploitation of CVE-2026-119128 in the wild and no public exploit code.
Sources
Also known as GHSA-84fg-x5h4-w8xv, GHSA-vc67-2j7f-xv7j.