{"schema":"threatline.record/2","record":{"id":"CVE-2026-118640","aliases":["GHSA-43v8-hjhm-chjp"],"summary":"n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass","details":"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.","categories":["Frameworks"],"product":"n8n","vendor":"n8n-io","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","source_modified_at":"2026-10-28T18:59:39.419Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"n8n","vendor":"n8n-io","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"1.123.85"},{"version":"1.123.85","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","source_modified_at":"2026-10-28T18:59:39.419Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"n8n","vendor":"n8n-io","versions":[{"version":"2.44.0","status":"affected","versionType":"semver","lessThan":"2.44.1"},{"version":"2.44.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","source_modified_at":"2026-10-28T18:59:39.419Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":"n8n","vendor":"n8n-io","versions":[{"version":"2.0.0","status":"affected","versionType":"semver","lessThan":"2.43.5"},{"version":"2.43.5","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","source_modified_at":"2026-10-28T18:59:39.419Z","fetched_at":"2026-10-28T20:58:01.013507Z","package":{"name":"n8n","ecosystem":null},"version":"1.123.85","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","source_modified_at":"2026-10-28T18:59:39.419Z","fetched_at":"2026-10-28T20:58:01.013507Z","package":{"name":"n8n","ecosystem":null},"version":"2.44.1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","source_modified_at":"2026-10-28T18:59:39.419Z","fetched_at":"2026-10-28T20:58:01.013507Z","package":{"name":"n8n","ecosystem":null},"version":"2.43.5","basis":"first unaffected version stated in the CVE record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T18:59:39.419Z","modified_at":"2026-10-28T18:59:39.419Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-118640","fetched_at":"2026-10-28T20:58:01.013507Z","source_modified_at":"2026-10-28T18:59:39.419Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp","tags":["vendor-advisory"]},{"source":"CVE List","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"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-28T18:59:39.419Z","content_hash":"09ced47fecb426c1952a8fd5e8b49b0cd76b261add1c9f9c21ae3085a82784a4"}}