The YourChannel plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.2.3. This is due to missing or incorrect nonce validation on the deleteLang function. This makes it possible for unauthenticated attackers to reset the plugin's quick language translation settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
The Waiting: One-click Countdowns WordPress Plugin, version <= 0.6.2, is affected by an authenticated SQL injection vulnerability in the pbc_down[meta][id] parameter of the pbc_save_downs action.
The YourChannel WordPress plugin before 1.2.2 does not sanitize and escape some parameters, which could allow users with a role as low as Subscriber to perform Cross-Site Scripting attacks.
The YourChannel: Everything you want in a YouTube plugin WordPress plugin before 1.2.3 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.