https://yoauth.herokuapp.com/authorize?redirect_to=http://yoauth.herokuapp.com/test.html%27%3E%3Ch1%3EXSS%3C/h1%3E https://yoauth.herokuapp.com/authorize?redire

https://yoauth.herokuapp.com/authorize?redirect_to=http://yoauth.herokuapp.com/test.html%27%3E%3Ch1%3EXSS%3C/h1%3E https://yoauth.herokuapp.com/authorize?redirect_to=http://yo... and here too