deals.hotelstayuk.com XSS vulnerability

Vulnerable URL: http://deals.hotelstayuk.com/Deals.asp?c=0=%22%3E%3Cimg%20src=x%20onerror=alertdocument.domain%[email protected]=noexist%22%3E%3Cimg%20src-x%20onerror-promptdocument.domin;%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 14.12.2017 Vulnerability...