The issue allows remote attackers to execute arbitrary SQL commands via various parameters in different PHP files, including the `orderby` parameter to "downloads.php", and several parameters in "forum/postedit.php", "forum/postnewthread.php", "administration/settings messages.php", "administration/settings photo.php", "administration/bbcodes.php", "administration/news.php", and "administration/articles.php". The vulnerable parameters include `delete attach ` in "forum/postedit.php", `poll opts[]` in "forum/postnewthread.php", `pm email notify`, `pm save sent`, `pm inbox`, `pm sentbox`, and `pm savebox` in "administration/settings messages.php", `thumb compression`, `photo watermark text color1`, `photo watermark text color2`, and `photo watermark text color3` in "administration/settings photo.php", `enable` in "administration/bbcodes.php", `news image`, `news image t1`, and `news image t2` in "administration/news.php", `news id` in "administration/news.php", and `article id` in "administration/articles.php".