SA-2008-070 - COMMENT MAIL
There is a CSRF (cross-site-request-forgery) in Comment Mail for Drupal 5.x prior to 5.x-1.1 that allows end-users to administer permissions and ban IP addresses, deny a comment, or approve one.
October 2008 has not been a kind month for Drupal. In addition to a 3rd party module needing to be updated, there have been modules banned because of multiple vulnerabilities, many problems with people updating modules wrong in Drupal 6, and several problems with the core that requires the Drupal core to be updated itself.
There have been 5 Drupal security announcements for September 2008 about 3rd party modules with Cross-Site-Scripting vulnerabilities in them.