The Grid Plus plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the 'grid_plus_save_layout_callback' and 'grid_plus_delete_callback' functions in versions up to, and including, 1.3.2. This makes it possible for authenticated attackers with subscriber privileges or above, to add, update or delete grid layout.
https://plugins.trac.wordpress.org/browser/grid-plus/tags/1.3.2/core/ajax_be.php#L69
https://plugins.trac.wordpress.org/browser/grid-plus/tags/1.3.2/core/ajax_be.php#L10