SQL injection vulnerability in PHP-Fusion 6.00.200 through 6.00.300 allows remote attackers to execute arbitrary SQL commands via the ratings parameter in multiple scripts, such as ratings_include.php.

Cross-site scripting (XSS) vulnerability in submit.php in PHP-Fusion 6.0.204 allows remote attackers to inject arbitrary web script or HTML via nested tags in the news_body parameter, as demonstrated by elements such as "<me<meta>ta" and "<sc<script>ript>".

Cross-site scripting (XSS) vulnerability in PHP-Fusion before 6.00.304 allows remote attackers to inject arbitrary web script or HTML via the (1) shout_name field in shoutbox_panel.php and the (2) comments field in comments_include.php.

PHP-Fusion 6.00.306 and earlier, running under Apache HTTP Server 1.3.27 and PHP 4.3.3, allows remote authenticated users to upload files of arbitrary types using a filename that contains two or more extensions that ends in an assumed-valid extension such as .gif, which bypasses the validation, as demonstrated by uploading then executing an avatar file that ends in ".php.gif" and contains PHP code in EXIF metadata.

Multiple directory traversal vulnerabilities in PHP-Fusion 6.00.306 allow remote attackers to include and execute arbitrary local files via (1) a .. (dot dot) in the settings[locale] parameter in infusions/last_seen_users_panel/last_seen_users_panel.php, and (2) a .. (dot dot) in the localeset parameter in setup.php. NOTE: the vendor states that this issue might exist due to problems in third party local files.

SQL injection vulnerability in messages.php in PHP-Fusion 6.00.307 and earlier allows remote authenticated users to execute arbitrary SQL commands via the srch_where parameter.

Multiple cross-site scripting (XSS) vulnerabilities in submit.php in PHP-Fusion before 6.01.3 allow remote attackers to inject arbitrary web script or HTML by using edit_profile.php to upload a (1) avatar or (2) forum image attachment that has a .gif or .jpg extension, and begins with a GIF header followed by JavaScript code, which is executed by Internet Explorer.

Global variable overwrite vulnerability in maincore.php in PHP-Fusion 6.01.4 and earlier uses the extract function on the superglobals, which allows remote attackers to conduct SQL injection attacks via the _SERVER[REMOTE_ADDR] parameter to news.php.

Multiple SQL injection vulnerabilities in PHP-Fusion before 6.00.110 allow remote attackers to execute arbitrary SQL commands via (1) the activate parameter in register.php and (2) the cat_id parameter in faq.php.

The ReadMe First.txt file in PHP-Fusion 4.0 instructs users to set the permissions on the fusion_admin/db_backups directory to world read/write/execute (777), which allows remote attackers to download or view database backups, which have easily guessable filenames and contain the administrator username and password.