Missing Authorization in n8n - CVE-2026-118677
Published: November 9, 2026 / Updated: November 10, 2026
Vulnerability identifier: #VU163083
CSH Severity: High
CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-118677
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated remote attacker to act on a user's computer through previously granted Local Gateway permissions.
The vulnerability exists due to n8n's Local Gateway accepting deep-link pairing changes without confirmation and carrying existing permissions over to the new instance. An unauthenticated remote attacker can connect the victim's computer to an attacker-controlled instance by inducing the victim to open a crafted link while the Local Gateway app is installed and running.
Affected software
n8n
How to mitigate CVE-2026-118677
Install security update from vendor's website.
n8n - addressed in versions 2.41.4, 2.42.1