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remote-mcp-server-authless

by ahump20

Overview

Deploys an unauthenticated Model Context Protocol (MCP) server to Cloudflare Workers, providing a calculator agent and a file reading tool for AI clients.

Installation

Run Command
wrangler dev

Environment Variables

  • OAUTH_KV
  • MCP_OBJECT
  • ASSETS

Security Notes

The 'read_file' tool in 'src/index.ts' allows fetching content from arbitrary URLs without any input validation or domain restrictions on the 'path' parameter. This constitutes a severe Server-Side Request Forgery (SSRF) vulnerability. An attacker could exploit this to access internal network resources, perform port scanning, interact with cloud metadata APIs to retrieve sensitive credentials, or make the worker perform requests to external malicious sites, potentially aiding in DDoS attacks or data exfiltration. This is a critical security risk.

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Stats

Interest Score0
Security Score2
Cost ClassHigh
Avg Tokens1000
Stars0
Forks0
Last Update2025-11-23

Tags

Cloudflare WorkersMCP ServerAI ToolsCalculatorServer-Sent Events