If you have a Drupal 6 website then you won't be receiving any more official security advisories or patches; from today your site is vulnerable to any new security issues discovered in Drupal 6 core or its modules, forever.
The Drupal Security Team has released a critical security advisory and software updates for the Drupal Content Management System (CMS). Users with websites running either Drupal 6 or Drupal 7 are urged to upgrade immediately.
