Ticket #12693: 12693.patch

wp-admin/includes/user.php

@@ -685 +685 @@
 
                 if ( $this->role ) {
                         $this->query_from .= " INNER JOIN $wpdb->usermeta ON $wpdb->users.ID = $wpdb->usermeta.user_id";
-                        $this->query_where .= $wpdb->prepare(" AND $wpdb->usermeta.meta_key = '{$wpdb->prefix}capabilities' AND $wpdb->usermeta.meta_value LIKE %s", '%' . $this->role . '%');
+                        $this->query_where .= $wpdb->prepare(" AND $wpdb->usermeta.meta_key = '{$wpdb->prefix}capabilities' AND $wpdb->usermeta.meta_value LIKE %s", '%"' . $this->role . '"%');
                 } elseif ( is_multisite() ) {
                         $level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
                         $this->query_from .= ", $wpdb->usermeta";