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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 29 Oct 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | ZITADEL 4.0.0 before 4.19.5 Login V2 Account Takeover via Forgeable verificationCheck Cookie | |
| First Time appeared |
Zitadel
Zitadel zitadel |
|
| Weaknesses | CWE-565 | |
| CPEs | cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Zitadel
Zitadel zitadel |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-29T15:58:10.483Z
Reserved: 2026-10-29T14:26:15.521Z
Link: CVE-2026-119128
No data.
Status : Deferred
Published: 2026-10-29T16:18:05.643
Modified: 2026-10-29T16:18:05.760
Link: CVE-2026-119128
No data.
OpenCVE Enrichment
Updated: 2026-10-29T23:00:05Z
Weaknesses