The E-book viewer in calibre before 2.75 allows remote attackers to read arbitrary files via a crafted epub file with JavaScript.
https://github.com/kovidgoyal/calibre/commit/3a89718664cb8c
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-1374
https://bugs.launchpad.net/calibre/+bug/1651728
http://www.securityfocus.com/bid/95909