The remote host is vulnerable to multiple attack vectors.
The remote host is running Serendipity. Serendipity is a Blogging software that is implemented in PHP. This version of Serendipity is reported vulnerable to multiple remote exploits. It is reported that this version is vulnerable to HTML injection, Cross-Site Scripting (XSS), and file upload flaws. An attacker exploiting these flaws would be able to gain or elevate privileges on the remote machine. An attacker may also be able to user the server as an attack vector against unsuspecting users browsing the website.
Upgrade to version 0.80 RC7 or higher.