Vulnerability · Published Oct 28, 2026 · Assigned by VulnCheck
CVE-2026-118640n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass
Medium 5.4
In plain English
A medium-severity incorrect authorization in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 91.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-43v8-hjhm-chjp) vendor-advisory
- VulnCheck Advisory: n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass third-party-advisory