n8n-io n8n up to 2.43.4/2.44.0 Chat Hub authorization

Summaryinfo

A vulnerability identified as critical has been detected in n8n-io n8n up to 2.43.4/2.44.0. The impacted element is an unknown function of the component Chat Hub. The manipulation leads to authorization. This vulnerability is documented as CVE-2026-118640. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in n8n-io n8n up to 2.43.4/2.44.0 and classified as critical. This issue affects some unknown functionality of the component Chat Hub. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-118640 since 10/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.123.85, 2.43.5 or 2.44.1 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• n8n-io

Name

• n8n

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42
• 2.43
• 2.43.0
• 2.43.1
• 2.43.2
• 2.43.3
• 2.43.4
• 2.44.0

Website

• Product: https://github.com/n8n-io/n8n/

CPE 2.3info

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