The security update for the OpenSSL Heartbleed issue has been released for the ClearOS Professional Edition. The update for the Community Edition should be available in the next 12-48 hours. You can find more information about this update here.
Note: the issue does not impact ClearOS 5.x systems.
Update (April 8, 10 pm EST): The fix for the Community Edition has now been promoted from testing to official updates. All the mirrors will have the up-to-date in a few hours.