[Plugin: uCan Post] Do not run the plugin! Security issue!

If you do not want users to have access to media, please find lines in the ucan-post-class.php file:

$role = get_role('contributor');
      $role->add_cap('upload_files');
      $role = get_role('subscriber');
      $role->add_cap('upload_files');
      $role->add_cap('unfiltered_html');

Change them to this:

$role = get_role('contributor');
      $role->remove_cap('upload_files');
      $role = get_role('subscriber');
      $role->remove_cap('upload_files');
      $role->remove_cap('unfiltered_html');

After changing these lines you will need to de-activate and re-activate the plugin before it will take affect.