function prepare_items() {
global $usersearch, $role, $wpdb, $mode;
- $usersearch = isset( $_REQUEST['s'] ) ? $_REQUEST['s'] : '';
+ $usersearch = isset( $_REQUEST['s'] ) ? wp_unslash( trim( $_REQUEST['s'] ) ) : '';
$users_per_page = $this->get_items_per_page( 'users_network_per_page' );