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TI-2026-30547 Aliases CVE-2026-42226GHSA-r4v6-9fqc-w5jr

n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay

Priority LOW 31CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · Low
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 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0026 17th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 1.123.33, 2.17.5n8n (npm): 2.17.5, 1.123.33

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 1.123.33; 2.17.0 to before 2.17.51.123.33, 2.17.5Patch availableCNA
—n8n (npm)2.17.0 to before 2.17.52.17.5Patch availableGHSA-r4v6-9fqc-w5jr
—n8n (npm)before 1.123.331.123.33Patch availableGHSA-r4v6-9fqc-w5jr
  • n8n Vendorn8n Affected before 1.123.33; 2.17.0 to before 2.17.5 Fixed in 1.123.33, 2.17.5 Patch available CNA
  • n8n (npm) Vendor— Affected 2.17.0 to before 2.17.5 Fixed in 2.17.5 Patch available GHSA-r4v6-9fqc-w5jr
  • n8n (npm) Vendor— Affected before 1.123.33 Fixed in 1.123.33 Patch available GHSA-r4v6-9fqc-w5jr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*before 1.123.33; 2.17.0 to before 2.17.5Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* Versions before 1.123.33; 2.17.0 to before 2.17.5 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n-io) Fixed in 1.123.33, 2.17.5
  • Fix · GHSA-r4v6-9fqc-w5jr n8n (npm) Fixed in 2.17.5 Advisory →
  • Fix · GHSA-r4v6-9fqc-w5jr n8n (npm) Fixed in 1.123.33 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42226
  2. 2026-10-03 Alias added: GHSA-r4v6-9fqc-w5jr

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