Provide references for CVE-2016-2539.
Where can I find more information about CVE-2016-2539?
References are available at: https://www.exploit-db.com/exploits/39524/, https://packetstormsecurity.com/files/136109/ATutor-LMS-2.2.1-CSRF-Remote-Code-Execution.html, https://github.com/atutor/ATutor/commit/bfc6c80c6c217c5515172f3cc949e13dfa1a92ac.