answers.earthclinic.com XSS vulnerability

Vulnerable URL: http://answers.earthclinic.com/assets/data/postsactions/flag.php?action=//"'--! Details: Description| Value ---|--- Patched:| No Latest check for patch:| 31.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| Unknown / Not calculated VIP website...