CVE-2026-44694 HIGH

CVE-2026-44694: n8n-MCP: Authenticated SSRF in n8n-mcp webhook and API client paths

Vendor Czlonkowski
Product n8n-mcp
Weakness CWE-367
Published May 8, 2026
Last update May 12, 2026
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 8, 2026 CVE published
May 12, 2026 Record updated