Free and open source webmail software for the masses, written in PHP.
Remote authenticated users with certain permissions can read arbitrary files or possibly execute arbitrary code via .. in the _skin parameter to index.php. Additionally, a cross-site scripting (XSS) vulnerability in program/js/app.js allows remote authenticated users to inject arbitrary web script or HTML via the file name in a drag-n-drop file upload.
A remote authenticated user could possibly execute arbitrary code with the privileges of the process, inject arbitrary web scripts or HTML, read arbitrary files, or perform XSS.
There is no known workaround at this time.
All Roundcube users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/roundcube-1.1.4”