Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to obtain sensitive information by reading files in the (1) config, (2) temp, or (3) logs directory.
https://roundcube.net/news/2015/06/05/updates-1.1.2-and-1.0.6-released
https://github.com/roundcube/roundcubemail/issues/4816
https://github.com/roundcube/roundcubemail/commit/012555c1cef35601b543cde67bff8726de97eb39