The remote host is missing an update to moin announced via advisory DSA 2083-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202083-1

It was discovered that moin, a python clone of WikiWiki, does not sufficiently sanitize parameters when passing them to the add_msg function. This allows a remote attackers to conduct cross-site scripting (XSS) attacks for example via the template parameter. For the stable distribution (lenny), this problem has been fixed in version 1.7.1-3+lenny5. For the testing distribution (squeeze), this problem will be fixed soon. For the unstable distribution (sid), this problem has been fixed in version 1.9.3-1.