Provide references for CVE-2017-11503.
Where can I find more information about CVE-2017-11503?
References are available at: http://www.securityfocus.com/bid/99293/, https://packetstormsecurity.com/files/143138/phpmailer-xss.txt, https://cxsecurity.com/issue/WLB-2017060181, http://www.securitytracker.com/id/1039026.