What is Prototype Pollution?

Question

I am trying to learn about prototype pollution: how it happens and how to find vulnerable code, but it's tough going finding good examples. Can anyone give me a concrete example and/or a good explanation of how and why it happens and what the effects are?

Answer 1

In jQuery?

Answer 2

Ярослав Вернигора (Yaroslav Vernigora) In JavaScript in general, but I'd be happy with a JQuery specific answer

Answer 3

I just read an article about it, advise to just update the version of this library to the newest one to ver. 3.4.0

Answer 4

Ярослав Вернигора (Yaroslav Vernigora) I don't use JQuery myself, except by-proxy through Angular. What I'm interested in understanding is when my own and other people's code may be vulnerable...