CVE-2026-45582

Description

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.3, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed in HTTP-Request-style node parameters — such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3.

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Produits concernés

• czlonkowski n8n-mcp
• N8n-mcp n8n-mcp

Scores CVSS

Faiblesses (CWE)

• CWE-201

Références

• https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f Patch
• https://github.com/czlonkowski/n8n-mcp/pull/782 Issue TrackingPatch
• https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3 ProductRelease Notes
• https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w MitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories