WordPress is prone to a security bypass vulnerability because the application fails to properly perform user-profile checks. Remote attackers with 'Author' and 'Contributor' privileges can exploit this issue to improperly edit, publish, or delete posts under certain circumstances. Note that successful exploitation requires the application to be enabled with the remote publishing feature. WordPress version 3.0.2 is vulnerable; prior versions may also be affected.
Update to WordPress version 3.0.3 or latest