CVE-2026-118640
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
- CVSS 3.1 5.4 Medium
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-10-28
- Last modified
- 2026-10-28
- Weaknesses
- CWE-863
Affected products
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
