Download here: http://www.silverstripe.org/assets/modules/stable/forum-v0.2.5.tar.gz
Post bug reports here: http://open.silverstripe.org
This release is to cover a security hole found in all versions of
forum. If you're running SilverStripe 2.3 with forum you are
recommended to upgrade. If you're on the latest 2.4 alpha then you
should continue to use trunk for the forum module.
Cheers.