{"id":"CVE-2026-65591","aliases":[],"cve":{"records":[{"id":"CVE-2026-65591","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-07-22T10:45:44.832Z","published":"2026-07-22T11:21:40.743Z","modified":"2026-10-29T21:16:22.614Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-29T21:16:22.614Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-07-22T15:51:37.174Z"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-917","description":"Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.123.64"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.30.1","versionStartIncluding":"2.30.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.29.8","versionStartIncluding":"2.0.0-rc.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-07-22T15:49:18.716129Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"n8n before 1.123.64 Sanitizer Bypass Remote Code Execution","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.","score":8.9,"severity":"high","published":"2026-07-22T11:21:40.743Z","modified":"2026-10-29T21:16:22.614Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.123.64","versionType":"semver"},{"version":"1.123.64","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-65591"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.30.0","status":"affected","lessThan":"2.30.1","versionType":"semver"},{"version":"2.30.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-65591"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.0.0-rc.0","status":"affected","lessThan":"2.29.8","versionType":"semver"},{"version":"2.29.8","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","packageIdentity":{"ecosystem":"npm","name":"n8n"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-65591"}],"remediation":[],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g","https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution"],"sources":[{"name":"CVE","id":"CVE-2026-65591","modified":"2026-10-29T21:16:22.614Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-65591"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L","score":8.9}],"sourceAffected":[],"observedAt":"2026-10-29T21:57:54.747Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:55:30.737Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T19:15:39.572Z","attemptedAt":"2026-10-29T19:15:39.572Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T19:15:39.478Z","attemptedAt":"2026-10-29T19:15:39.478Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T19:15:40.816Z","attemptedAt":"2026-10-29T19:15:40.816Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T19:15:39.560Z","attemptedAt":"2026-10-29T19:15:39.560Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-pm35-fqvh-cq5g","url":"https://github.com/advisories/GHSA-pm35-fqvh-cq5g","modified":"2026-07-22T22:02:05Z","checkedAt":"2026-10-29T19:15:39.478Z"},{"source":"FIRST EPSS","id":"CVE-2026-65591","url":"https://www.first.org/epss/","probability":0.00694,"percentile":0.52873,"date":"2026-10-29","checkedAt":"2026-10-29T19:15:39.560Z"},{"source":"NVD","id":"CVE-2026-65591","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65591","modified":"2026-10-24T17:10:00.220","score":8.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/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","checkedAt":"2026-10-29T19:15:39.572Z"},{"source":"NVD","id":"CVE-2026-65591","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65591","modified":"2026-10-24T17:10:00.220","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-29T19:15:39.572Z"},{"source":"ENISA EUVD","id":"EUVD-2026-47635","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-47635","modified":"Oct 29, 2026, 6:24:04 PM","score":8.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L","checkedAt":"2026-10-29T19:15:40.816Z"}],"aiSummary":{"text":"n8n before 1.123.64, 2.29.8, and 2.30.1 contains a sanitizer bypass vulnerability. An authenticated user with workflow create or modify permissions can craft a malicious expression. The vulnerability may achieve host-level code execution as the n8n process.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:34:12.921Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-65591"}]}}