This script is Copyright (C) 2011-2015 Tenable Network Security, Inc.
The remote Fedora host is missing a security update.
Roundcube Webmail upstream has released v0.5.1 version: 
which adds one security hardening: 1), Security: add optional referer
check to prevent CSRF in GET requests Relevant patches: 
and fixes two security flaws: 2), Security: protect login form
submission from CSRF Relevant patch: 
http://trac.roundcube.net/changeset/4490 3), Security: prevent from
relaying malicious requests through modcss.inc Relevant patch: 
Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.
See also :
Update the affected roundcubemail package.
Risk factor :
Get Nessus Professional to scan unlimited IPs, run compliance checks & moreBuy Nessus Professional Now