kinman.com XSS vulnerability

Vulnerable URL: http://kinman.com/model-products.php?modelid=59"--!"=SRV set=Stratocaster=4=yes=Named SetsKNOXSS Details: Description| Value ---|--- Patched:| No Latest check for patch:| 31.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 1140113 VIP website...