The remote host is missing an update to moodle announced via advisory DSA 2262-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202262-1

Several cross-site scripting and information disclosure issues have been fixed in Moodle, a course management system for online learning: * MSA-11-0002 Cross-site request forgery vulnerability in RSS block * MSA-11-0003 Cross-site scripting vulnerability in tag autocomplete * MSA-11-0008 IMS enterprise enrolment file may disclose sensitive information * MSA-11-0011 Multiple cross-site scripting problems in media filter * MSA-11-0015 Cross Site Scripting through URL encoding * MSA-11-0013 Group/Quiz permissions issue For the stable distribution (squeeze), this problem has been fixed in version 1.9.9.dfsg2-2.1+squeeze1. For the unstable distribution (sid), this problem has been fixed in version 1.9.9.dfsg2-3. We recommend that you upgrade your moodle packages.