CVE-2026-41495 n8n-MCP Logs Sensitive Request Data on Unauthorized /mcp Requests

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to version 2.47.11, when n8n-mcp runs in HTTP transport mode, incoming requests to the POST /mcp endpoint had their request metadata written to server logs regardless of the...

CVE-2026-41495: Insertion of Sensitive Information into Log File

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to version 2.47.11, when n8n-mcp runs in HTTP transport mode, incoming requests to the POST /mcp endpoint had their request metadata written to server logs regardless of the...

Insertion of Sensitive Information into Log File

Overview n8n-mcp is an Integration between n8n workflow automation and Model Context Protocol MCP Affected versions of this package are vulnerable to Insertion of Sensitive Information into Log File in the POST /mcp endpoint. An attacker can cause sensitive information such as bearer tokens, API...

PT-2026-34682

Name of the Vulnerable Software and Affected Versions n8n-mcp versions prior to 2.47.11 Description When running in HTTP transport mode, incoming requests to the 'POST /mcp' endpoint have their request metadata written to server logs regardless of whether authentication is successful. This can le...