Quora: XSS when clicking "Share to Twitter" at quora.com/widgets/embed_iframe?path=...

Summary: The endpoint at https://language.quora.com/widgets/embediframe?path=pathtoanswerinsamelanguage shows the answer you specify in path like /Question/answer/User in a format useful to embed. There is one button Share that when clicked shows another button Share to Twitter. The href attribut...