As awkward as it is to issue a new release less than 24 hours after the previous one, here it is: bbPress 0.8.2.1.
We recommend all users download and upgrade now.
This release fixes a security bug found by Ory Segal, written up by Dragos Lungu and pointed out to me (today) by Epsilon.
Too bad I hadn’t heard about it yesterday 
The following files have changed.
We recommend going through the full upgrade every time, but if you are upgrading from bbPress 0.8.2 only, you can download those files (or the corresponding diff if you know how to use it).
Anyone upgrading from earlier versions must go through the standard upgrade proceedure.