{"id":"GHSA-xwx6-jjhv-84p8","revision":"e1c172b6c12f413d8dbeb0e05db3e3b8","records":[{"revision":"e1c172b6c12f413d8dbeb0e05db3e3b8","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-xwx6-jjhv-84p8","aliases":["CVE-2026-72749"],"title":"n8n: Prototype Pollution via Dot-Notation Field Names Leads To Instance-Wide Denial of Service","description":"## Impact\n\nThe Edit Fields (Set) node assigned output fields through a dot-notation path setter without restricting the field name, so an authenticated user could name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global was used on the request-authentication path, the instance then failed every authenticated request, causing a instance-wide denial of service for all users until the process was restarted.\n\n## Patches\n\nThe issue has been fixed in n8n versions 1.123.67, 2.31.5, and 2.32.1. Users should upgrade to one of these versions or later to remediate the vulnerability.\n\n## Workarounds\n\nIf upgrading is not immediately possible, administrators should consider the following temporary mitigations:\n- Restrict n8n instance access to fully trusted users only.\n- Disable or restrict workflow creation and execution permissions for untrusted users.\n- Monitor for unexpected process-wide HTTP 500 errors and restart the process promptly if they occur.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","state":0,"publishedAt":"2026-07-22T22:12:33+00:00","modifiedAt":"2026-08-12T04:26:16.5794076+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.123.67"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.32.0"},{"kind":"fixed","version":"2.32.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0-rc.0"},{"kind":"fixed","version":"2.31.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8","https://github.com/n8n-io/n8n/commit/f69dfc6dd2178a14ea1624d2e1d403c2e755042f","https://github.com/n8n-io/n8n","https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.67","https://github.com/n8n-io/n8n/releases/tag/n8n@2.31.5","https://github.com/n8n-io/n8n/releases/tag/n8n@2.32.1"],"sourceUrl":"https://github.com/advisories/GHSA-xwx6-jjhv-84p8","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-xwx6-jjhv-84p8","identifiers":["GHSA-xwx6-jjhv-84p8","CVE-2026-72749"]},"retained":false,"historicalAffected":[]}],"coverage":[]}