mcp-builder-server

The provided source code is incomplete; critical API implementations for core functionalities (e.g., `/api/servers`, `/api/convert`, `/api/workflow`) are missing. These endpoints are targeted by the MCP server's internal `fetch` calls. Without their implementation, a comprehensive security audit is impossible, and the absence itself represents a critical functional defect or vulnerability. A broad `Access-Control-Allow-Origin: *` policy is set for the SSE endpoint, which could be a risk if sensitive data were transmitted or if combined with other vulnerabilities. The `convertOpenAPI` functionality (if fully implemented elsewhere) is highly susceptible to Server-Side Request Forgery (SSRF) or other arbitrary file/URL fetching vulnerabilities if user-provided OpenAPI specifications are not rigorously sanitized and validated.