After WordPress 3.0.4, few days ago, WordPress team released a security update through WordPress 3.0.5 after seeing some threat from Contributor and Author access level on multi user blogs. In some scenario, Contributors and Authors access levels can get further access on the site and manipulate data. That’s why it is essential for those WordPress admins who are having untrusted users to upgrade their site to latest version. Before the final release of WordPress 3.1, this security update came. As WordPress 3.1 is at RC4 stage, we can expect final build in next few weeks.
This 3.0.5 update is also having couple of security enhancements for plugins installed on the system which are not following security API of WordPress.
Upgrade to WordPress 3.0.5 from dashboard by using Automatically upgrade or you can use manual upgrade through FTP to upload the latest files on server. Enjoy a secured and safe blogging.