Medium severity5.4NVD Advisory· Published Oct 28, 2026· Updated Oct 28, 2026

CVE-2026-118640

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.

Patches

Vulnerability mechanics

References

github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjpnvd
www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypassnvd

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