runbritain.com XSS vulnerability

Vulnerable URL: https://www.runbritain.com/RaceDetail.aspx?eventid=7db90ece5f73=79be0ec95e6e=http://www.runbritain.com/races?keyword=%22%27%20Style=position:fixed;top:0;left:0;font-size:999px;%20Onmouseenter=confirmOPENBUGBOUNTY%20//========98=8=0=0=1 Details: Description| Value ---|--- Patched:|...