phpcart.php in PHPCart 3.2 allows remote attackers to change product price information by modifying the (1) price or (2) postage parameters. NOTE: it was later reported that 3.4 through 4.6.4 are also affected.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.