puzzle-english.com XSS vulnerability

Vulnerable URL: https://puzzle-english.com/lessons-and-exercises?me6sfkLzZkgY=&emDv69xVvrgNo;=action="';-- Details: Description| Value ---|--- Patched:| Yes, at 04.12.2015 Latest check for patch:| 04.12.2015 10:29 GMT Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank|...