What are the potential pitfalls of using $_REQUEST in PHP scripts?

Using $_REQUEST in PHP scripts can pose security risks as it combines data from $_GET, $_POST, and $_COOKIE. This can make the script vulnerable to injection attacks or unintended data manipulation. To mitigate these risks, it is recommended to use $_GET or $_POST specifically depending on the expected data source. 

// Using $_GET or $_POST instead of $_REQUEST
$value = isset($_GET['value']) ? $_GET['value'] : null;

Keywords

$_REQUEST security vulnerabilities data validation injection attacks cross-site scripting

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