PraisonAI is a multi-agent teams system. From 1.5.0 until 1.7.2, MCPServer.startHttp() in src/praisonai-ts/src/mcp/server.ts binds without a host restriction and forwards every HTTP POST request to handleRequest() without authentication or authorization. Any network client that can reach the port can call tools/list, tools/call, resources/read, or prompts/get, causing registered handlers to run with server-side credentials and process privileges or disclose registered data. An initial remediation was released in version 1.7.2.

Affected: npm: praisonai

## Summary

The published npm package `praisonai` exports a TypeScript `MCPServer` that can expose tools, resources, and prompts over an HTTP JSON-RPC transport with:

```ts await server.start({ port: 3000 }); ```

The HTTP transport has no authentication or authorization path. `MCPServerConfig` does not expose an auth/security setting, `startHttp()` ignores the `Authorization` header, and every POST request is parsed and forwarded directly to `handleRequest()`. That request handler dispatches sensitive MCP methods such as `tools/call`, `resources/read`, and `prompts/get`.

The implementation also calls `this.httpServer.listen(port)` without a host argument. In Node.js this binds to the unspecified address; the local PoV observed `{ address: "::", family: "IPv6" }`, making the service reachable on all interfaces on systems where the port is exposed.

This lets any network client that can reach the HTTP port list tools and invoke registered server-side tools without credentials. Supplying `Authorization: Bearer invalid` makes no difference.

## Technical Details

`MCPServerConfig` exposes server metadata, tools/resources/prompts, stdio, port, and logging. It does not expose an auth token, authorization policy, `MCPSecurity` instance, authorization callback, or loopback-only option:

```text src/praisonai-ts/src/mcp/server.ts 57: export interface MCPServerConfig { 63: tools?: MCPServerTool[]; 65: resources?: MCPResource[]; 67: prompts?: MCPPrompt[]; 69:…