Mailing the story:
Debian alert: New mailman packages fix cross-site scripting problem
A cross-site scripting vulnerability was discovered in mailman, a
software to manage electronic mailing lists. When a properly crafted
URL is accessed with Internet Explorer (other browsers don't seem to
be affected), the resulting webpage is rendered similar to the real
one, but the javascript component is executed as well, which could be
used by an attacker to get access to sensitive information. The new
version for Debian 2.2 also includes backports of security related
patches from mailman 2.0.11.