Medium severity · published Oct 28, 2026
CVE-2026-118640
n8n before 1.123.85, 2.43.5, and 2.44.1 Chat Hub Authorization Bypass
New
5.4
CVSS
–
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
before 1.123.85; 2.44.0 before 2.44.1; 2.0.0 before 2.43.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-118640
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-118640
vendor-advisory
https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp
third-party-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypass
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