Vulnerabilities / CVE-2026-118640

CVE-2026-118640

Published 2026-10-28 · published (not yet in NVD)

CVE-2026-118640

n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass

5.3 MEDIUM
CVSS 4.0 · CNA

0.2%
chance of exploitation in the next 30 days (EPSS; higher than 8% of CVEs)

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.

Scores

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NCNA

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NCNA

Affected products

n8n-io n8n: < 1.123.85
n8n-io n8n: 2.44.0 to < 2.44.1
n8n-io n8n: 2.0.0 to < 2.43.5

Weakness: CWE-863

Also known as: GHSA-43v8-hjhm-chjp

2 references (advisories, patches, write-ups)

https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp · vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypass · third-party-advisory

Sources: CVE.org, OSV.dev, FIRST EPSS. Missing ones did not answer or have no record yet.

Look up another CVE Check your dependencies Scan a website