source: https://www.securityfocus.com/bid/23950/info

CommuniGate Pro is prone to an HTML-injection vulnerability because it fails to sufficiently sanitize user-supplied input.

Exploiting this issue may allow an attacker to execute HTML and script code in the context of the affected site, to steal cookie-based authentication credentials, or to control how the site is rendered to the user; other attacks are also possible.

CommuniGate Pro 5.1.8 and earlier versions are vulnerable to this issue.

Note that this issue is present only when using Microsoft Internet Explorer. 

<STYLE>@im\port'\ja\vasc\ript:alert("XSS in message body (style using import)")';</STYLE>