+-----------------------------------------------+
| MyBB 1.1.8 Vulnerability Fix                  |
|   Manual Patch Instructions                   |
|                                               |
| Please note:                                  |
|  This is a temporary patch for MyBB 1.1.8     |
|  boads to protect against a new security      |
|  vulnerabilities before boards upgrade to     |
|  MyBB 1.2.7                                   |
|                                               |
|  This patch should only be applied to boards  |
|  running MyBB 1.1.8                           |
|                                               |
+-----------------------------------------------+

---------------------------
1. private.php
---------------------------

Find:
--
$order = $mybb->input['order'];
$sortby = $mybb->input['sortby'];
--

REPLACE with:
--
$order = htmlspecialchars($mybb->input['order']);
$sortby = htmlspecialchars($mybb->input['sortby']);
--

ALL DONE