Add-cart.php Num [extra Quality] -

Anatomy of a Vulnerability: The add-cart.php num Exploit

In the realm of web application security, few vulnerabilities are as financially impactful as those affecting e-commerce logic. The phrase add-cart.php num is often associated with a classic Parameter Tampering attack. It represents a scenario where a malicious user manipulates the quantity or price of an item in their shopping cart to pay less than the intended price.

Developers use this parameter to pass data from a "Buy Now" or "Add to Cart" button to a backend script. For example: URL Example: ://yourstore.com Script Logic: add-cart.php file receives $_GET['num'] add-cart.php num

The script applies the "buy 2 get 1 free" logic 4,999 times. The cart session becomes bloated, potentially causing memory exhaustion (DoS) and massive discount abuse. Anatomy of a Vulnerability: The add-cart

Improper Input Validation: Failing to use functions like is_numeric() to verify that the num parameter is a positive integer. Developers use this parameter to pass data from

product_id=456&num=3&option=size_l