Attackers focus on the num parameter because it acts as a direct mathematical influencer on the shopping cart's total price. In poorly designed systems, the frontend sends the unit price hidden in a form, and the backend calculates the total by multiplying the unit price by the num quantity. If the backend does not verify this price against the database, an attacker can manipulate the request.
: Passing add-cart.php?num=-5 might subtract items from the cart or, in poorly written scripts, reduce the total checkout price into negative balances.
Quantity: Add to Cart Use code with caution. add-cart.php num
Determining if the product is a "new" addition or an "update" to an existing line item. Redirection:
// Limit maximum quantity $quantity = min($quantity, 99); Attackers focus on the num parameter because it
: The server verifies that the product ID exists in the database and is currently in stock.
An attacker could exploit this line to read sensitive database tables, bypass authentication, or modify store data. Best Practices for Secure Cart Processing : Passing add-cart
Never pass the price field from a front-end HTML form or a JavaScript object directly to your cart operations. A developer should only trust identifiers fetched directly from the database table. This stops malicious actors from rewriting a $500.00 laptop down to $0.01 via browser element manipulation tools. 📊 Security Architecture Comparison Security Strategy Defense Mechanism Risk Level Implementation Difficulty Directly pushes raw $_POST array metrics into variables. 🚨 Critical Danger Extremely Low Basic Type Casting
Within minutes, the attacker has extracted table names, dumped admin credentials, and is now logged into the admin panel. All from a single num parameter.
Nudist DVD Collection
by NaturistSol
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| Castle Naturism | Fun at the Nude Beach | Sandcastle Contests |
Hula Hoops |
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The Family Nudist DVDs above are at:
www.Enature.net
� 2006 [NaturistSol.com] All Rights Reserved. All of our titles are registered with the United States Library of Congress and we actively prosecute copyright violations worldwide. All images have been reviewed by prominent First Amendment Attorney Marcus Katz, esq. We do not publish any visual depiction of "lascivious exhibition(s) of the genitals or pubic area," clothed or unclothed. These are standard documentaries of Naturist activities enjoyed by millions of people worldwide. These type of nudist materials have been sold without pause since 1955 in the United States and Federal Courts have ruled them to be federally protected free speech.