perform-better.de XSS vulnerability

Vulnerable URL: http://www.perform-better.de/index.php?stoken=4AFF2C4Dsid=p9155llhb245kde1pk9babesl5〈=0=search=%22%2F%3E%27%3E%22%3EI%3Ci%3EI%3Csvg%2Fonload%3Dalert%28%2Fopenbugbounty%2F%29%3E Details: Description| Value ---|--- Patched:| Yes, at Vulnerability type:| XSS Vulnerability status:|...