{"id":"CVE-2026-85056","title":"ZITADEL is an open source identity management platform","summary":"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 use…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","cwe":["CWE-287"],"vendor":"zitadel","product":"github.com/zitadel/zitadel","affected":["github.com/zitadel/zitadel < 1.80.0-v2.20.0.20260717062356-56f4798ed31f"],"patched":["github.com/zitadel/zitadel 1.80.0-v2.20.0.20260717062356-56f4798ed31f"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T18:19:04.180","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85056","references":[{"url":"https://github.com/zitadel/zitadel/commit/049dbb25a56587fb3980c85c99819cad69f637db","label":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/commit/56f4798ed31fc1cfcd9a0e7f6f0152289d2fdc43","label":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.1","label":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-9993-rfwp-rhwf","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-9993-rfwp-rhwf"}],"tags":["nvd","ghsa","go","cve.org"],"aliases":["GHSA-9993-rfwp-rhwf"],"ecosystem":"go","ingestedAt":"2026-09-24T17:48:30.404Z","slug":"CVE-2026-85056","body":"## Overview\n\nZITADEL 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-85056)\n\nAffected packages:\n\n- `github.com/zitadel/zitadel < 1.80.0-v2.20.0.20260717062356-56f4798ed31f`\n\nPatched in:\n\n- `github.com/zitadel/zitadel 1.80.0-v2.20.0.20260717062356-56f4798ed31f`\n\nSource: https://github.com/advisories/GHSA-9993-rfwp-rhwf","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}