Description
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.
Published: 2026-05-08
Score: 7.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-cmrh-wvq6-wm9r n8n-mcp webhook and API client paths has an authenticated SSRF
History

Thu, 14 May 2026 18:15:00 +0000

Type Values Removed Values Added
First Time appeared N8n-mcp
N8n-mcp n8n-mcp
CPEs cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*
Vendors & Products N8n-mcp
N8n-mcp n8n-mcp
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L'}


Tue, 12 May 2026 02:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 08 May 2026 22:45:00 +0000

Type Values Removed Values Added
First Time appeared Czlonkowski
Czlonkowski n8n-mcp
Vendors & Products Czlonkowski
Czlonkowski n8n-mcp

Fri, 08 May 2026 19:30:00 +0000

Type Values Removed Values Added
Description 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.
Title n8n-MCP: Authenticated SSRF in n8n-mcp webhook and API client paths
Weaknesses CWE-367
CWE-918
References
Metrics cvssV4_0

{'score': 7.2, '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'}


Subscriptions

Czlonkowski N8n-mcp
N8n-mcp N8n-mcp
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-12T02:05:56.224Z

Reserved: 2026-05-07T17:07:09.316Z

Link: CVE-2026-44694

cve-icon Vulnrichment

Updated: 2026-05-12T02:05:52.586Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-08T20:16:31.917

Modified: 2026-05-14T18:10:06.867

Link: CVE-2026-44694

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-08T22:30:18Z

Weaknesses