The remote host is missing an update to namazu2 announced via advisory DSA 627-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20627-1

A cross-site scripting vulnerability has been discovered in namazu2, a full text search engine. An attacker could prepare specially crafted input that would not be sanitised by namazu2 and hence displayed verbatim for the victim. For the stable distribution (woody) this problem has been fixed in version 2.0.10-1woody3. For the unstable distribution (sid) this problem has been fixed in version 2.0.14-1. We recommend that you upgrade your namazu2 package.