The remote host is missing an update to libmojolicious-perl announced via advisory DSA 2239-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202239-1

Several vulnerabilities have been discovered Mojolicious, a Perl Web Application Framework. The link_to helper was affected by cross-site scripting and implementation errors in the MD5 HMAC and CGI environment handling have been corrected. The oldstable distribution (lenny) doesn't include libmojolicious-perl. For the stable distribution (squeeze), this problem has been fixed in version 0.999926-1+squeeze2. For the unstable distribution (sid), this problem has been fixed in version 1.12-1. We recommend that you upgrade your libmojolicious-perl packages.