Microsoft DebugMCP had drive-by RCE via DNS rebinding (fixed in 1.2.0)
Imperva disclosed that DebugMCP ≤1.1.4 listened on port 3001 with no auth; a malicious page could DNS-rebind to localhost and run code via start_debugging with a UNC path. The silent fix is in 1.2.0 and later—update if you still run the older VS Code extension.
