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CVE-2026-118677

n8n before 2.41.4 and 2.42.1 Local Gateway Deep-Link Silent Re-pairing to Attacker Instance

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.42.1, 2.41.4
None on Exploit-DB, Metasploit or GitHub

Summary

The n8n Local Gateway desktop app, which lets an n8n instance act on a user's computer, is affected. An attacker can trick a user into opening a crafted link that silently re-pairs the app with an attacker-controlled n8n instance, which can then use the permissions the user previously granted to perform actions on their computer.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original 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.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • n8n-io n8n

    From 2.42.0 · fixed in 2.42.1

  • n8n-io n8n

    fixed in 2.41.4

References 2

GitHub · n8n-io/n8n

vulncheck.com