MCP server for the Czech business registry ARES, enabling company validation, lookup, and due diligence checks directly from AI clients.
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
Undici: Malicious WebSocket 64-bit length overflows parser and crashes the client
Undici has Unhandled Exception in WebSocket Client Due to Invalid server_max_window_bits Validation
process.env. You'll be asked to provide them before it can run.ARES_BASE_URLARES_HTTP_ALLOW_ORIGIN— _(unset)_ If set, sent as Access-Control-Allow-Origin (e.g. or https://example.com)ARES_HTTP_MAX_BODY— 1000000 Max request body bytesARES_HTTP_RATE_LIMIT— 60 Per-IP requests per minute (token bucket)ARES_HTTP_SESSION_TTL_MS— 3600000 Idle session timeoutARES_RATE_PER_SECOND— 5 Token-bucket budget. MFČR documents a ceiling of 500 req/min (~8 req/s); we default to 5 for headroom. Do not exceed 8.ARES_RETRIES— 3 Retry budget (on top of the initial attempt) for retriable errorsARES_TIMEOUT_MS— 15000 Per-request timeoutPORT— 3030 npm run start:http[](https://m8ven.ai/mcp/milos106-ares-mcp-170dvm)