{"id":"CVE-2026-72749","state":"PUBLISHED","title":"n8n before 1.123.67 Prototype Pollution via Edit Fields","description":"n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted.","publishedAt":"2026-08-11T12:17:02.774Z","updatedAt":"2026-10-29T21:16:34.851Z","severity":{"score":7.1,"label":"High","version":"4.0","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","source":"VulnCheck"},"assigner":"VulnCheck","products":["n8n-io n8n"],"affected":[{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.123.67","versionType":"semver"},{"version":"1.123.67","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.32.0","status":"affected","lessThan":"2.32.1","versionType":"semver"},{"version":"2.32.1","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.0.0-rc.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.31.5","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8","https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-edit-fields"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T23:14:04.755Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72749.json","commit":"dc7676b3f67d6707e4927968546e7e0125ff7ec7","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72749","state":"PUBLISHED","datePublished":"2026-08-11T12:17:02.774Z","dateUpdated":"2026-10-29T21:16:34.851Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-10T13:53:42.482Z"},"containers":{"cna":{"title":"n8n before 1.123.67 Prototype Pollution via Edit Fields","descriptions":[{"lang":"en","value":"n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted."}],"affected":[{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.123.67","versionType":"semver"},{"version":"1.123.67","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.32.0","status":"affected","lessThan":"2.32.1","versionType":"semver"},{"version":"2.32.1","status":"unaffected","versionType":"semver"}]},{"vendor":"n8n-io","product":"n8n","packageURL":"pkg:npm/n8n","defaultStatus":"unaffected","versions":[{"version":"2.0.0-rc.0","status":"affected","lessThan":"2.31.5","versionType":"semver"},{"version":"2.31.5","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-xwx6-jjhv-84p8)"},{"url":"https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-edit-fields","name":"VulnCheck Advisory: n8n before 1.123.67 Prototype Pollution via Edit Fields","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-29T21:16:34.851Z"},"datePublic":"2026-07-22T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.123.67"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.32.1","versionStartIncluding":"2.32.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.31.5","versionStartIncluding":"2.0.0-rc.0"}]}]}],"credits":[{"lang":"en","value":"breakingsystems","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T17:41:04.589878Z","id":"CVE-2026-72749","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-11T17:50:40.766Z"}}]}}}