The YourChannel plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check when clearing the plugin cache via the yrc_clear_cache GET parameter in versions up to, and including, 1.2.3. This makes it possible for unauthenticated attackers to clear the plugin's cache.
https://wordpress.org/plugins/yourchannel/
https://plugins.trac.wordpress.org/browser/yourchannel/trunk/YourChannel.php?rev=2844975#L768