Argument Injection

How argument injection happens in Node.js Copilot tool bridge and how to fix it

A high-severity argument injection vulnerability was discovered in the Copilot tool bridge (`bridge.ts`) where user-controlled `request.args` were passed directly to `tool.execute()` without any validation or sanitization. The fix introduces Zod schema validation at line 108, ensuring that tool arguments are parsed against a declared `inputSchema` before execution. This prevents malformed or malicious payloads — including prototype pollution attempts — from reaching the underlying tool implement