{"id":"CVE-2026-85056","published":"2026-09-24T18:19:04.040","lastModified":"2026-09-28T15:17:24.163","description":"ZITADEL is an open source identity management platform. From 4.0.0 until 4.16.1, ZITADEL Login V2 creates a browser session after password verification and can reuse that session for a later authentication request without verifying a user's enrolled TOTP, OTP, or U2F second factor. When the MFA step is abandoned and login starts again, session-validity checks require MFA only when the organization enables Force MFA or Force MFA for local users only, so a voluntarily enrolled factor can be skipped while completing an OIDC or SAML callback for a customer application. Login V1, the ZITADEL Console, Management and Admin APIs, and user self-management are not affected. This issue is fixed in version 4.16.1.","cvssScore":8.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","cwes":["CWE-287"],"vendors":[],"products":[],"references":[{"url":"https://github.com/zitadel/zitadel/commit/049dbb25a56587fb3980c85c99819cad69f637db","tags":[]},{"url":"https://github.com/zitadel/zitadel/commit/56f4798ed31fc1cfcd9a0e7f6f0152289d2fdc43","tags":[]},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.1","tags":[]},{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-9993-rfwp-rhwf","tags":[]}],"exploitRefs":[{"url":"https://github.com/zitadel/zitadel/commit/049dbb25a56587fb3980c85c99819cad69f637db","tags":[]},{"url":"https://github.com/zitadel/zitadel/commit/56f4798ed31fc1cfcd9a0e7f6f0152289d2fdc43","tags":[]},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.1","tags":[]},{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-9993-rfwp-rhwf","tags":[]}],"hasPoc":true,"ai":null}