Mandatory upgrade to WordPress 2.1.2 from 2.1.1, everyone.

Apparently, someone managed to get their nose in where it doesn’t belong on the WordPress servers, and exploit the WordPress 2.1.1 download.

If you’ve downloaded WP 2.1.1 in the past few days FROM THE WEBSITE, you MUST upgrade, to avoid these exploits.

If you use Fantastico!, or any of those other installer packages, make sure you’re not using 2.1.1. If you are, upgrade to be safe.

Those of you using Subversion to upgrade and maintain your WordPress installs, you should be fine.

Feel free to read the article for more detail.