CRITICAL 9.2 NVD
CVE-2026-109373
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' sess
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.
References
- https://github.com/zitadel/zitadel/security/advisories/GHSA-jh92-5mrj-p2w2
- https://www.vulncheck.com/advisories/zitadel-3.0.0-before-4.19.2-account-takeover-via-unsi
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-10-12 via NVD.
Risk Timeline
CVE Disclosed2026-10-12 · -1 days ago
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