The Head, Footer and Post Injections plugin for WordPress is vulnerable to PHP Code Injection in all versions up to, and including, 3.3.0. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject PHP Code in multisite environments.
The Giveaway WordPress plugin through 1.2.2 is vulnerable to an SQL Injection issue which allows an administrative user to execute arbitrary SQL commands via the $post_id on the options.php page.