{"id":"CVE-2026-56350","aliases":["GHSA-vjf3-2gpj-233v"],"url":"https://o3.security/vulnerability/CVE-2026-56350","summary":"n8n - SSO Enforcement Bypass via API","details":"## Impact\nAn authenticated user signed in through Single Sign-On (SSO) could disable SSO enforcement for their own account through the n8n API. This allowed the user to create a local password and authenticate directly with email and password, completely bypassing the organization's SSO policy, centralized identity management, and any identity-provider-enforced multi-factor authentication.\n\n## Patches\nThe issue has been fixed in n8n version 2.8.0. Users should upgrade to this version or later to remediate the vulnerability.\n\n## Workarounds\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Monitor audit logs for users who create local credentials after authenticating via SSO.\n- Restrict the n8n instance to fully trusted users only.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","published":"2026-06-30T22:08:34.810Z","modified":"2026-10-28T02:30:41.772967089Z","cvss":null,"epss":{"score":0.00379,"percentile":0.3164,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"n8n","fixedVersion":"2.8.0"}],"fix":{"url":"https://github.com/n8n-io/n8n/commit/a70b2ea379086da3de103bb84811e88cadf29976","label":"n8n-io/n8n@a70b2ea"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56350.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-vjf3-2gpj-233v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56350"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-sso-enforcement-bypass-via-api"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/commit/a70b2ea379086da3de103bb84811e88cadf29976"},{"type":"PACKAGE","url":"https://github.com/n8n-io/n8n"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.8.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:41.772967089Z"}}