{"id":"GHSA-x6p3-m6h9-fx7r","revision":"e4a8a5d5b6444fcba4b24a1bccaf747a","records":[{"revision":"e4a8a5d5b6444fcba4b24a1bccaf747a","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-x6p3-m6h9-fx7r","aliases":["CVE-2026-54312"],"title":"n8n: Microsoft SQL Node Prototype Pollution","description":"## Impact\nAn authenticated user with permission to create or modify workflows could achieve global prototype pollution via the Microsoft SQL node by supplying a crafted value as the table parameter. This pollutes `Object.prototype` process-wide for the lifetime of the n8n server process, causing application-wide validation failures and rendering the n8n instance completely non-functional until restarted.\n\n## Patches\nThe issue has been fixed in n8n version 2.24.0. 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 workflow creation and editing permissions to fully trusted users only.\n- Disable the Microsoft SQL node by adding `n8n-nodes-base.microsoftSql` to the `NODES_EXCLUDE` environment variable.\n\nThese workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.","state":0,"publishedAt":"2026-06-16T22:38:52+00:00","modifiedAt":"2026-07-20T13:45:33.5616238+00:00","affected":[{"ecosystem":"npm","name":"n8n","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.24.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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-x6p3-m6h9-fx7r","https://nvd.nist.gov/vuln/detail/CVE-2026-54312","https://github.com/n8n-io/n8n"],"sourceUrl":"https://github.com/advisories/GHSA-x6p3-m6h9-fx7r","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-x6p3-m6h9-fx7r","identifiers":["GHSA-x6p3-m6h9-fx7r","CVE-2026-54312"]},"retained":false,"historicalAffected":[]}],"coverage":[]}