Session fixation vulnerability in CubeCart before 5.2.9 allows remote attackers to hijack web sessions via the PHPSESSID parameter.
The Cubecart::basket method in classes/cubecart.class.php in CubeCart 5.0.0 through 5.2.0 allows remote attackers to unserialize arbitrary PHP objects via a crafted shipping parameter, as demonstrated by modifying the application configuration using the Config object.