fliphtml5.com XSS vulnerability

Vulnerable URL: https://fliphtml5.com/help/1/'"--!" Details: Description| Value ---|--- Patched:| Yes, at 27.11.2017 Latest check for patch:| 27.11.2017 21:40 GMT Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 23063 VIP website status:| Yes Check fliphtml5.com SSL...