WordPress has just released an urgent security update for the 2.3 series. If you’re blog is powered by WordPress 2.3, then you should upgrade to this latest version right away. The upgrade fixes a security bug that allows people to view your timestamped posts. You may have seen a few posts around Blogsphere showing how to see what Shoemoney is going to post tomorrow. Well, once Shoe upgrades his WordPress, you won’t be able to do that anymore.
WordPress 2.3.2 also suppresses some error messages that can give away information about your database table structure and limits and stops some information leaks in the XML-RPC and APP implementations. There’s also a bonus that allows you to define a custom DB error page. See the full list of changes here.
This is not a major release and as such it will not change your DB structure. Upgrading should be as easy as uploading and replacing the old WordPress files. That’s what I did anyway. You can see a list of full bug fixes here.