WordPress 3.3.2 is available now and is a security update for all previous versions. Make sure to upgrade ALL of your WP installations ASAP and stay secure!
Three external libraries included in WordPress received security updates:
1. Plupload (version 1.5.4), which WordPress uses for uploading media.
2. SWFUpload, which WordPress previously used for uploading media, and may still be in use by plugins.
3. SWFObject, which WordPress previously used to embed Flash content, and may still be in use by plugins and themes.
Official Release Notes