ZITADEL 3.0.0 before 4.19.2 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to obtain other users' session tokens by forging unsigned session cookies. Attackers can guess time-ordered session IDs around a victim's sign-in and supply them with empty tokens to receive rotated tokens, taking over accounts including MFA-completed administrator sessions.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 12 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | ZITADEL 3.0.0 before 4.19.2 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to obtain other users' session tokens by forging unsigned session cookies. Attackers can guess time-ordered session IDs around a victim's sign-in and supply them with empty tokens to receive rotated tokens, taking over accounts including MFA-completed administrator sessions. | |
| Title | ZITADEL 3.0.0 before 4.19.2 Account Takeover via Unsigned Login V2 Session Cookie | |
| First Time appeared |
Zitadel
Zitadel zitadel |
|
| Weaknesses | CWE-441 | |
| 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: 2026-10-12T16:05:45.649Z
Reserved: 2026-10-12T14:23:25.691Z
Link: CVE-2026-109373
No data.
Status : Deferred
Published: 2026-10-12T17:17:35.110
Modified: 2026-10-12T17:17:35.230
Link: CVE-2026-109373
No data.
OpenCVE Enrichment
No data.
Weaknesses