CVE-2026-40576 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in excel-mcp-server

excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated...

Directory Traversal

Overview excel-mcp-server is an Excel MCP Server for manipulating Excel files Affected versions of this package are vulnerable to Directory Traversal via the getexcelpath function. An attacker can read, write, overwrite, and create arbitrary files and directories on the host filesystem by supplyi...