{"id":"CVE-2026-118640","title":"n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass","summary":"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 e…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-863"],"vendor":"n8n-io","product":"n8n","affected":["n8n < 1.123.85","n8n >= 2.44.0 < 2.44.1","n8n >= 2.0.0 < 2.43.5"],"published":"2026-10-28","updated":"2026-10-28","sourceUpdated":"2026-10-28T18:59:39.419Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118640","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp","label":"GitHub Security Advisory (GHSA-43v8-hjhm-chjp)"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypass","label":"VulnCheck Advisory: n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass"}],"tags":["cve.org"],"epss":0.00189,"epssPercentile":0.08537,"ingestedAt":"2026-10-29T15:37:07.527Z","slug":"CVE-2026-118640","body":"## Overview\n\nn8n 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.\n\n## Affected\n\n- `n8n < 1.123.85`\n- `n8n >= 2.44.0 < 2.44.1`\n- `n8n >= 2.0.0 < 2.43.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}