This script is Copyright (C) 2013-2016 Tenable Network Security, Inc.
The remote Fedora host is missing a security update.
A cross-site scripting (XSS) flaws were round in the way Round Cube
Webmail, a browser-based multilingual IMAP client, performed
sanitization of 'data' and 'vbscript' URLs. A remote attacker could
provide a specially crafted URL that, when opened would lead to
context of Round Cube Webmail's user session.
Upstream ticket:  http://trac.roundcube.net/ticket/1488850
Further details: 
Upstream 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 :
Medium / CVSS Base Score : 5.8
CVSS Temporal Score : 5.0
Public Exploit Available : true