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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

28 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-28 19:17

Updated : 2026-10-28 19:17

NVD link : CVE-2026-118640

Mitre link : CVE-2026-118640

CVE.ORG link : CVE-2026-118640

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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