{"id":"CVE-2026-118640","aliases":[],"cve":{"records":[{"id":"CVE-2026-118640","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-28T17:24:54.846Z","published":"2026-10-28T18:59:39.419Z","modified":"2026-10-28T18:59:39.419Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-28T18:59:39.419Z"}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypass","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-863","description":"Incorrect Authorization","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 Chat Hub Authorization Bypass","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability in Chat Hub that allows chat-only users to register restricted tool types. Users with the global:chatUser role can add and run tools through chat to execute sandboxed code, access permitted files, and use instance workflows, Data Tables, and agents.","score":5.4,"severity":"medium","published":"2026-10-28T18:59:39.419Z","modified":"2026-10-28T18:59:39.419Z","withdrawn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-2026-118640"},{"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-2026-118640"},{"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-2026-118640"}],"remediation":[],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp","https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypass"],"sources":[{"name":"CVE","id":"CVE-2026-118640","modified":"2026-10-28T18:59:39.419Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118640"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.3},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4}],"sourceAffected":[],"observedAt":"2026-10-29T14:37:28.632Z","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 have an authorization bypass vulnerability in Chat Hub, allowing chat-only users to register restricted tool types. Users with the global:chatUser role can access permitted files and instance workflows. The vulnerability is due to incorrect authorization.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:54:22.049Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-118640"}]}}