Users are advised that WordPress 3.0.3 has just been released and is a security update. This release fixes issues in the XML-RPC remote publishing interface.
This release fixes issues in the remote publishing interface, which under certain circumstances allowed Author- and Contributor-level users to improperly edit, publish, or delete posts.
If you have remote publishing enabled on your site you are urged to upgrade. You can do so easily via the built-in automatic upgrade feature. If upgrading the old fashioned way is your cup of tea here is the list of revised files …