Multiple directory traversal vulnerabilities in IceWarp Mail Server before 11.2 allow remote attackers to read arbitrary files via a (1) .. (dot dot) in the file parameter to a webmail/client/skins/default/css/css.php page or .../. (dot dot dot slash dot) in the (2) script or (3) style parameter to webmail/old/calendar/minimizer/index.php.
https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-001/?fid=5614
https://www.exploit-db.com/exploits/44587/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-1637
http://packetstormsecurity.com/files/147505/IceWarp-Mail-Server-Directory-Traversal.html