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CVE-2026-118677 Details

ANALYZED

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

Description

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a missing confirmation vulnerability in the Local Gateway desktop app that allows its deep-link connect handler to silently re-pair the app with a different n8n instance. Attackers can lure users running the Local Gateway into opening a crafted n8n-computer-use:// link to connect their computer to an attacker-controlled instance, inheriting previously granted permissions and acting on the computer through the gateway.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-cwm2-vhf5-27q9	[email protected]	AdvisoryRemedyVendor
https://www.vulncheck.com/advisories/n8n-before-2.41.4-and-2.42.1-local-gateway-deep-link-silent-re-pairing-to-attacker-instance	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-939	Improper Authorization in Handler for Custom URL Scheme	[email protected]

Affected Products

Product	Versions
n8n	< 2.42.1 (semver) < 2.41.4 (semver)
CPE cpe:2.3:a:n8n:n8n::::::node.js::* Remediation Upgrade: >= 2.42.1moderate effort Upgrade: >= 2.41.4moderate effort Mitigation:low effort Do not open unsolicited links using the n8n-computer-use:// scheme. Mitigation:low effort Quit the Local Gateway app when it is not actively in use to reduce the window of exposure. Mitigation:low effort Restrict the allowedOrigins setting to the specific instance URL the Gateway is paired with, rather than relying on the default wildcard. Mitigation:low effort Disable the Computer Use / Local Gateway feature if it is not required.

Product

Versions

n8n

< 2.42.1 (semver)

< 2.41.4 (semver)

CPE

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

Remediation

Upgrade: >= 2.42.1moderate effort
Upgrade: >= 2.41.4moderate effort
Mitigation:low effort
Do not open unsolicited links using the n8n-computer-use:// scheme.
Mitigation:low effort
Quit the Local Gateway app when it is not actively in use to reduce the window of exposure.
Mitigation:low effort
Restrict the allowedOrigins setting to the specific instance URL the Gateway is paired with, rather than relying on the default wildcard.
Mitigation:low effort
Disable the Computer Use / Local Gateway feature if it is not required.

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]