Blogging software WordPress has posted an update to their software that they are calling a “critical” update. WordPress founder Matt Mullenweg posted about the update this afternoon and suggests you download and install the patch as soon as possible.
You can see the full changeset that is part of the 3.0.4 WordPress patch on the WordPress Trac.
If you run WordPress on your own server, you can use the auto-update to download and install the 3.0.4 version with the patch or you can download the software from wordpress.org.