What are the potential pitfalls of using hidden form inputs for passing data in PHP applications?

Potential pitfalls of using hidden form inputs for passing data in PHP applications include security risks such as data manipulation by users, lack of validation and sanitation of input data, and the potential for sensitive information to be exposed. To mitigate these risks, it is recommended to use server-side validation and sanitization of all incoming data, as well as implementing proper authentication and authorization mechanisms. 

<?php
// Validate and sanitize incoming data from hidden form input
if(isset($_POST['hidden_input'])){
    $hidden_input = filter_var($_POST['hidden_input'], FILTER_SANITIZE_STRING);
    
    // Use the sanitized data for further processing
}
?>

Keywords

hidden form inputs data passing security vulnerability cross-site scripting validation errors

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