Read the docs
TI-2026-40711 Aliases CVE-2026-56348GHSA-3875-8gcx-7v46

n8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters Endpoint

Priority LOW 25CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

Summary

n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00482 41st percentileScored 2026-11-07
Fix Fixed n8n (n8n): 2.20.0n8n (npm): 2.20.0

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 2.20.02.20.0Patch availableCNA
—n8n (npm)before 2.20.02.20.0Patch availableGHSA-3875-8gcx-7v46
  • n8n Vendorn8n Affected before 2.20.0 Fixed in 2.20.0 Patch available CNA
  • n8n (npm) Vendor— Affected before 2.20.0 Fixed in 2.20.0 Patch available GHSA-3875-8gcx-7v46

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*before 2.20.0Vulnerablen8n
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*before 2.20.0Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* Versions before 2.20.0 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* Versions before 2.20.0 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n) Fixed in 2.20.0
  • Fix · GHSA-3875-8gcx-7v46 n8n (npm) Fixed in 2.20.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56348
  2. 2026-10-03 Alias added: GHSA-3875-8gcx-7v46

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