critical9.1
CVE-2026-44694
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | n8n-mcp | >= 2.18.7, < 2.50.2 | 2.50.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| N8n-Mcp | N8n-Mcp | from 2.18.7 before 2.50.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-cmrh-wvq6-wm9r
- https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r
- https://nvd.nist.gov/vuln/detail/CVE-2026-44694
- https://github.com/czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb
- https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.50.2