The remote host is vulnerable to a script injection attack.
The remote host is running Discuz, a web-based message board. This version of Discuz is vulnerable to a flaw that would allow remote attackers to upload arbitrary files to the web server. The attacker could then execute the uploaded file (with the permission of the web server) or convince other Discuz users to download and/or execute the code. An attacker exploiting this flaw would be able to gain access to confidential data, potentially impact the availability of the server, and tarnish the integrity of the server.
No solution is known at this time.