Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-118640 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:7.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-43v8-hjhm-chjp	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-chat-hub-authorization-bypass	[email protected]	AdvisoryVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]

Affected Products

Product	Versions
n8n	< 1.123.85 (semver) < 2.44.1 (semver) < 2.43.5 (semver)
CPE cpe:2.3:a:n8n:n8n::::::node.js::* Remediation Upgrade: 1.123.85moderate effort Upgrade: 2.43.5moderate effort Upgrade: 2.44.1moderate effort Mitigation:low effort Restrict n8n instance access to fully trusted users only. Mitigation:low effort Do not assign the global:chatUser role to any user who is not fully trusted until the instance is patched. Mitigation:low effort Disable Chat Hub if it is not required. Mitigation:low effort Use the NODES_EXCLUDE environment variable to remove high-risk node types from the instance if they are not needed. Mitigation:low effort Enable N8N_SSRF_PROTECTION_ENABLED=true to reduce the impact of outbound request abuse.

Product

Versions

n8n

< 1.123.85 (semver)

< 2.44.1 (semver)

< 2.43.5 (semver)

CPE

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*

Remediation

Upgrade: 1.123.85moderate effort
Upgrade: 2.43.5moderate effort
Upgrade: 2.44.1moderate effort
Mitigation:low effort
Restrict n8n instance access to fully trusted users only.
Mitigation:low effort
Do not assign the global:chatUser role to any user who is not fully trusted until the instance is patched.
Mitigation:low effort
Disable Chat Hub if it is not required.
Mitigation:low effort
Use the NODES_EXCLUDE environment variable to remove high-risk node types from the instance if they are not needed.
Mitigation:low effort
Enable N8N_SSRF_PROTECTION_ENABLED=true to reduce the impact of outbound request abuse.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 3, 2026	CVE Modified	CISA-ADP
Oct 28, 2026	New CVE Received	[email protected]