High 7.2Published May 8, 2026

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

Updated under an hour ago (Oct 28, 2026, 5:40 AM ET)

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Every CVE for czlonkowski n8n-mcp

Exploited in the last 30 days

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: 7.2 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-367, CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

czlonkowski n8n-mcp czlonkowski:n8n_mcp (from the name)	from 2.18.7, < 2.50.2	CNA record
n8n-mcp n8n-mcp n8n-mcp:n8n-mcp	from 2.18.7 before 2.50.2	NVD

References

References

https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb	x-refsource-misc, patch
https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.