IceWarp Mail Server through 10.4.4 is prone to a local file inclusion vulnerability via webmail/calendar/minimizer/index.php?style=..%5c directory traversal.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-4187
http://packetstormsecurity.com/files/153161/IceWarp-10.4.4-Local-File-Inclusion.html