{"id":"CVE-2026-118646","aliases":[],"cve":{"records":[{"id":"CVE-2026-118646","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-28T17:24:54.846Z","published":"2026-10-28T18:59:45.637Z","modified":"2026-10-28T18:59:45.637Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-28T18:59:45.637Z"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-m7gv-mpg5-7c9v","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-redos-via-read-write-files-node","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-1333","description":"Inefficient Regular Expression Complexity","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionEndExcluding":"1.123.85"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionStartIncluding":"2.44.0","versionEndExcluding":"2.44.1"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.43.5"}]}]}]}],"prioritization":[]},"title":"n8n before 1.123.85, 2.43.5, and 2.44.1 ReDoS via Read/Write Files Node","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"n8n before 1.123.85, 2.43.5, and 2.44.1 contains a regular expression denial of service vulnerability that allows authenticated members to block the event loop via crafted glob patterns. Attackers who can create and run workflows can submit a wildcard-heavy File(s) Selector pattern causing exponential backtracking, making the UI, API, webhooks, and health checks unresponsive until restart.","score":7.1,"severity":"high","published":"2026-10-28T18:59:45.637Z","modified":"2026-10-28T18:59:45.637Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.123.85","versionType":"semver"},{"version":"1.123.85","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-2026-118646"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.44.0","status":"affected","lessThan":"2.44.1","versionType":"semver"},{"version":"2.44.1","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-2026-118646"},{"vendor":"n8n-io","name":"n8n","platforms":[],"versions":[{"version":"2.0.0","status":"affected","lessThan":"2.43.5","versionType":"semver"},{"version":"2.43.5","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-2026-118646"}],"remediation":[],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-m7gv-mpg5-7c9v","https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-redos-via-read-write-files-node"],"sources":[{"name":"CVE","id":"CVE-2026-118646","modified":"2026-10-28T18:59:45.637Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118646"}],"assessments":[{"source":"VulnCheck","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":7.1},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5}],"sourceAffected":[],"observedAt":"2026-10-29T14:37:33.080Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T14:15:35.655Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"n8n versions before 1.123.85, 2.43.5, and 2.44.1 contain a regular expression denial of service vulnerability. Authenticated members can block the event loop via crafted glob patterns, making the UI, API, webhooks, and health checks unresponsive. This occurs when attackers create and run workflows with wildcard-heavy File(s) Selector patterns.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:54:34.533Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-118646"}]}}