What are the potential limitations or pitfalls when using cURL to execute a PHP script on a different server?

When using cURL to execute a PHP script on a different server, potential limitations or pitfalls include security risks such as exposing sensitive data, potential for unauthorized access to the server, and potential for denial of service attacks. To mitigate these risks, it is important to properly sanitize input data, validate user permissions, and use secure communication protocols like HTTPS. 

<?php
// Example of using cURL with proper security measures
$url = 'https://example.com/script.php';

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Disable SSL verification for testing purposes only, should be enabled in production
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(['param1' => 'value1'])); // Sanitize input data
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Authorization: Bearer token']); // Validate user permissions

$response = curl_exec($ch);

if($response === false){
    echo 'cURL error: ' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);
?>

Keywords

cURL PHP script limitations executing different server

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