The remote host is missing an update to mantis announced via advisory DSA 1467-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201467-1

Several remote vulnerabilities have been discovered in Mantis, a web based bug tracking system. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2006-6574 Custom fields were not appropriately protected by per-item access control, allowing for sensitive data to be published. CVE-2007-6611 Multiple cross site scripting issues allowed a remote attacker to insert malicious HTML or web script into Mantis web pages. The stable distribution (etch) is not affected by these problems. For the old stable distribution (sarge), these problems have been fixed in version 0.19.2-5sarge5. For the unstable distribution (sid), these problems have been fixed in version 1.0.8-4. We recommend that you upgrade your mantis package.