The latest releases of CiviCRM 4.6 and 4.4 LTS include 2 moderately critical security fixes. It is recommended to upgrade to the latest version to keep your site as secure as possible.
The latest release of CiviCRM 4.6 includes security fixes. While this issue is unlikely to affect the average CiviCRM site, it is recommended to upgrade to the latest version to keep your site as secure as possible.
If you are currently using 4.6.7 and your site uses ACLs to segment access to contacts you are strongly encouraged to upgrade. The 4.6.7 release included a regression in the ACL system which caused certain contact access permissions to behave improperly. The 4.4 LTS branch was unaffected.