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TI-2026-82166 Aliases CVE-2026-118677GHSA-qmh8-47xc-q5c6

n8n Local Gateway deep link silently re-pairs to attacker instance

Priority LOW 26CWE-939Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

n8n before 2.41.4 and from 2.42.0 before 2.42.1 contain an improper authorization flaw in the handler for the n8n-computer-use:// custom URL scheme in the Local Gateway desktop app, tracked as CWE-939. The deep-link connect handler re-pairs the app with a different n8n instance without confirmation. A remote attacker who lures a user running the Local Gateway into opening a crafted link can connect the computer to an attacker-controlled instance, which inherits previously granted permissions and acts on the computer through the gateway.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00165 5th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 2.42.1, 2.41.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
n8nn8n2.42.0 to before 2.42.12.42.1Patch availableCNA
n8nn8nbefore 2.41.42.41.4Patch availableCNA
  • n8n Vendorn8n Affected 2.42.0 to before 2.42.1 Fixed in 2.42.1 Patch available CNA
  • n8n Vendorn8n Affected before 2.41.4 Fixed in 2.41.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*——n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:* Versions — — ·n8n

Remediation

Upgrade n8n to 2.41.4 or, for the 2.42.x range, to 2.42.1.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA n8n (n8n-io) Fixed in 2.42.1
  • Fix · CNA n8n (n8n-io) Fixed in 2.41.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    n8n-io n8n 2.41.4, 2.42.1

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-82167 Prototype pollution in n8n workflow history compaction causes denial of servicePriority LOW 31
    • TI-2026-82168 Server-side request forgery in n8n Slack Trigger leaks Slack tokensPriority LOW 30
    Show all 3 records →

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-118677
  2. 2026-10-28 Alias added: GHSA-qmh8-47xc-q5c6
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-11-03 CISA SSVC decision points changed

References

Advisory 1

  • TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
  • TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
  • TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
  • TI-2026-82991 Code execution in n8n via deprecated Function nodes CVSS 4.0HIGH 8.7
  • TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
See all 233 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences