CVE-2026-44694

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. From version 2.18.7 to before version 2.50.2, there is an authenticated server-side request forgery vulnerability affecting the webhook trigger tools, the n8n API client (N8N_API_URL), and per-request URLs supplied via the x-n8n-url header in multi-tenant HTTP mode. This issue has been patched in version 2.50.2.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 5.3

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb	Patch
https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2	Product Release Notes
https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*

History

14 May 2026, 18:10

Type	Values Removed	Values Added
First Time		N8n-mcp n8n-mcp N8n-mcp
CPE		cpe:2.3:a:n8n-mcp:n8n-mcp::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
References	~~() https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb -~~	() https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb - Patch
References	~~() https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2 -~~	() https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2 - Product, Release Notes
References	~~() https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r -~~	() https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r - Mitigation, Vendor Advisory

08 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-08 20:16

Updated : 2026-05-14 18:10

NVD link : CVE-2026-44694

Mitre link : CVE-2026-44694

CVE.ORG link : CVE-2026-44694

JSON object : View

Products Affected

n8n-mcp

n8n-mcp

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

CWE-918

Server-Side Request Forgery (SSRF)

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