globals.php in Mambo Site Server 4.0.14 and earlier, when register_globals is disabled, allows remote attackers to overwrite variables in the GLOBALS array and conduct various attacks, as demonstrated using the mosConfig_absolute_path parameter to content.html.php for remote PHP file inclusion.
index2.php in Mambo 4.0.12 allows remote attackers to gain administrator access via a URL request where session_id is set to the MD5 hash of a session cookie.