{"id":"CVE-2026-56349","aliases":["GHSA-fvfv-ppw4-7h2w"],"url":"https://o3.security/vulnerability/CVE-2026-56349","summary":"n8n - Guardrail Node Bypass via Crafted Input","details":"## Impact\nAn end user interacting with a workflow that uses the Guardrail node could craft an input that bypasses the default guardrail instructions.\n\n## Patches\nThe issue has been fixed in n8n version 2.10.0. 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- Limit access to trusted users.\n- Review asses the practical impact of guardrail bypasses in your usecase and adjust your workflow accordingly.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","published":"2026-07-15T11:25:27.992Z","modified":"2026-10-21T02:58:42.157127911Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"n8n","fixedVersion":"2.10.0"}],"fix":{"url":"https://github.com/n8n-io/n8n/commit/8d0251d1deef256fd3d9176f05dedab62afde918","label":"n8n-io/n8n@8d0251d"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56349.json"},{"type":"ADVISORY","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56349"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/n8n-guardrail-node-bypass-via-crafted-input"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/commit/8d0251d1deef256fd3d9176f05dedab62afde918"},{"type":"PACKAGE","url":"https://github.com/n8n-io/n8n"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.10.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:58:42.157127911Z"}}