The remote host is missing an update to wget announced via advisory DSA 2088-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202088-1

It was discovered that wget, a command line tool for downloading files from the WWW, uses server-provided file names when creating local files. This may lead to code execution in some scenarios. After this update, wget will ignore server-provided file names. You can restore the old behavior in cases where it is not desirable by invoking wget with the new --use-server-file-name option. For the stable distribution (lenny), this problem has been fixed in version 1.11.4-2+lenny2. For the unstable distribution (sid), this problem will be fixed soon. We recommend that you upgrade your wget package.