Read the docs
TI-2026-30549 Aliases CVE-2026-42228GHSA-f77h-j2v7-g6mw

n8n: Hijacking of Unauthenticated Chat Execution

Priority LOW 28CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /chat WebSocket endpoint used by the Chat Trigger node's Hosted Chat feature did not verify that an incoming connection was authorized to interact with the target execution. An unauthenticated remote attacker who could identify a valid execution ID for a workflow in a waiting state could attach to that execution, receive the pending prompt intended for the legitimate user, and submit arbitrary input to resume or influence downstream workflow behavior. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.32, 2.17.4, 2.18.1n8n (npm): 1.123.32, 2.18.1, 2.17.4

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
n8nn8nbefore 1.123.32; 2.17.0 to before 2.17.4; 2.18.0 to before 2.18.11.123.32, 2.17.4, 2.18.1Patch availableCNA
—n8n (npm)before 1.123.321.123.32Patch availableGHSA-f77h-j2v7-g6mw
—n8n (npm)2.18.0 to before 2.18.12.18.1Patch availableGHSA-f77h-j2v7-g6mw
—n8n (npm)2.0.0 to before 2.17.42.17.4Patch availableGHSA-f77h-j2v7-g6mw
  • n8n Vendorn8n Affected before 1.123.32; 2.17.0 to before 2.17.4; 2.18.0 to before 2.18.1 Fixed in 1.123.32, 2.17.4, 2.18.1 Patch available CNA
  • n8n (npm) Vendor— Affected before 1.123.32 Fixed in 1.123.32 Patch available GHSA-f77h-j2v7-g6mw
  • n8n (npm) Vendor— Affected 2.18.0 to before 2.18.1 Fixed in 2.18.1 Patch available GHSA-f77h-j2v7-g6mw
  • n8n (npm) Vendor— Affected 2.0.0 to before 2.17.4 Fixed in 2.17.4 Patch available GHSA-f77h-j2v7-g6mw

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*before 1.123.32; 2.17.0 to before 2.17.4Vulnerablen8n
cpe:2.3:a:n8n:n8n:2.18.0:*:*:*:enterprise:node.js:*:*2.18.0Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* Versions before 1.123.32; 2.17.0 to before 2.17.4 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:2.18.0:*:*:*:enterprise:node.js:*:* Versions 2.18.0 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n-io) Fixed in 1.123.32, 2.17.4, 2.18.1
  • Fix · GHSA-f77h-j2v7-g6mw n8n (npm) Fixed in 1.123.32 Advisory →
  • Fix · GHSA-f77h-j2v7-g6mw n8n (npm) Fixed in 2.18.1 Advisory →
  • Fix · GHSA-f77h-j2v7-g6mw n8n (npm) Fixed in 2.17.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42228
  2. 2026-10-03 Alias added: GHSA-f77h-j2v7-g6mw

References

Advisory 2

Other 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-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
  • TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8
See all 178 →

Sources

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