{"id":"CVE-2026-85056","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-85056","generatedAt":"2026-10-28T04:18:22.502Z","title":"ZITADEL is an open source identity management platform.","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.","published":"2026-09-24T18:19:04.000Z","lastModified":"2026-09-28T15:17:24.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"},"cwe":["CWE-287"],"affected":[],"epss":{"score":0.00285,"percentile":0.20934,"date":"2026-10-27","history":[{"date":"2026-09-25","score":0.00285,"percentile":0.18777}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-24T18:19:04.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-09-24T18:19:04.040Z"},"summary":"New CVE, high severity (CVSS 8.2)."}],"references":[{"url":"https://github.com/zitadel/zitadel/commit/049dbb25a56587fb3980c85c99819cad69f637db","source":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/commit/56f4798ed31fc1cfcd9a0e7f6f0152289d2fdc43","source":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.16.1","source":"security-advisories@github.com"},{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-9993-rfwp-rhwf","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-85056","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}