{"id":"CVE-2026-56349","aliases":["EUVD-2026-44624","GHSA-9v3h-fx77-8r29","GHSA-fvfv-ppw4-7h2w"],"status":"published","title":"n8n - Guardrail Node Bypass via Crafted Input","description":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00472,"percentile":0.41314,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-693"],"published":"2026-02-26T22:46:42Z","modified":"2026-11-02T02:46:28Z","fixes":[{"ecosystem":"npm","package":"n8n","fixed_in":["2.10.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"n8n","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.0"}]}]},{"source":"osv","ecosystem":"npm","package":"n8n","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.10.0"}]}]}],"products":[{"vendor":"n8n","product":"n8n"},{"vendor":"n8n-io","product":"n8n"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w","tags":["vendor-advisory","advisory","web"]},{"url":"https://www.vulncheck.com/advisories/n8n-guardrail-node-bypass-via-crafted-input","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56349","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9v3h-fx77-8r29"},{"url":"https://github.com/n8n-io/n8n/commit/8d0251d1deef256fd3d9176f05dedab62afde918","tags":["web"]},{"url":"https://github.com/n8n-io/n8n/releases/tag/n8n@2.10.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-fvfv-ppw4-7h2w"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56349.json","tags":["advisory"]},{"url":"https://github.com/n8n-io/n8n","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-56349","title":"n8n - Guardrail Node Bypass via Crafted Input","description":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.","status":"published","published":"2026-07-15T11:25:27.992Z","modified":"2026-07-15T12:42:58.824Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T13:37:02.780526Z"}],"euvd":[{"id":"EUVD-2026-44624","description":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.","status":"published","published":"2026-07-15T11:25:27Z","modified":"2026-07-15T12:42:58Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:19:53.226345Z"}],"ghsa":[{"id":"GHSA-9v3h-fx77-8r29","title":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that...","description":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.","status":"published","published":"2026-07-15T12:32:02Z","modified":"2026-07-15T12:32:02Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:09:32.601666Z"},{"id":"GHSA-fvfv-ppw4-7h2w","title":"n8n has a Guardrail Node Bypass","description":"## 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.","status":"published","published":"2026-02-26T22:46:42Z","modified":"2026-02-26T22:46:43Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-20","CWE-693"],"updated_at":"2026-11-02T14:39:27.949248Z"}],"nvd":[{"id":"CVE-2026-56349","description":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.","status":"published","published":"2026-07-15T12:18:02.297Z","modified":"2026-10-25T15:10:00.147Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:29.879716Z"}],"osv":[{"id":"CVE-2026-56349","title":"n8n - Guardrail Node Bypass via Crafted Input","description":"n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.","status":"published","published":"2026-07-15T11:25:27.992Z","modified":"2026-11-02T02:46:28.487297743Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:45:11.609219Z"},{"id":"GHSA-fvfv-ppw4-7h2w","title":"n8n has a Guardrail Node Bypass","description":"## 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.","status":"published","published":"2026-02-26T22:46:42Z","modified":"2026-07-16T03:56:45.317747847Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"low"},{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-20","CWE-693"],"updated_at":"2026-11-02T15:46:46.760785Z"}]}}