How secure are various languages when running with WebAssembly?

Hey all, I'm curious about how effective WebAssembly is (and other sandboxing like in iOS and Android), and under what conditions we should use which languages inside it.

AFAIK, WebAssembly is a pretty solid sandbox. Does that mean it's fine to use something as unsafe as C? Or something occasionally unsafe like Rust? Or should we perhaps stick to a language without `unsafe` blocks just to be safe?

I know that unsafe code can lead to bugs, but I'm not …

cybersecurity languages webassembly