I’ve found an stored XSS on itslearning education system works without even autorized. Hacker can do lots of things via Itslearning stored XSS vulnerability. This XSS works without any authorization, so it is more dangerous than usual XSS. Payload : I use <svg/onload=prompt(1)> but almost every payload works. PoCs about itslearning stored XSS  Redirect via XSS; https://files.itslearning.com/data/2099/13132/xss.html Alert…