The WordPress lead developers released WordPress 2.3.3 the other day. This update fixes a security flaw that allowed people to edit others’ posts using the XML-RPC implementation in WordPress. There were also three other bugfixes that fixed minor issues that were discovered. Read more about WordPress 2.3.3 at the Development Blog

And at the same time, WordPressMU 1.3.3 has also been released. WordPressMU is the WordPress based software designed to serve multiple blogs from one installation of WordPress. This is also a security update, and syncs with WordPress 2.3.3. More can be found at the forum annoucment about WordPressMU 1.3.3