The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://mail.python.org/pipermail/mailman-announce/2011-February/000157.html http://www.vuxml.org/freebsd/64691c49-4b22-11e0-a226-00e0815b8da8.html

The following package is affected: mailman CVE-2011-0707 Multiple cross-site scripting (XSS) vulnerabilities in Cgi/confirm.py in GNU Mailman 2.1.14 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) full name or (2) username field in a confirmation message.