What are some potential security risks when embedding a PHP script on a remote server via iframe?

One potential security risk when embedding a PHP script on a remote server via iframe is the risk of Cross-Site Scripting (XSS) attacks. To mitigate this risk, you can sanitize user input and output to prevent malicious scripts from being executed. 

<?php
// Sanitize user input
$user_input = htmlspecialchars($_GET['user_input']);

// Output sanitized user input
echo $user_input;
?>

Keywords

XSS CSRF remote code execution iframe sandboxing HTTP headers

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