What are the potential security risks of executing a PHP script from a remote server?

Executing a PHP script from a remote server can pose security risks such as exposing sensitive information, allowing remote code execution, and potential injection attacks. To mitigate these risks, it is recommended to validate and sanitize input data, restrict file permissions, and use secure communication protocols like HTTPS. 

// Example of validating and sanitizing input data before executing a remote PHP script
if(isset($_GET['script_url'])){
    $script_url = filter_var($_GET['script_url'], FILTER_VALIDATE_URL);
    
    if($script_url !== false){
        // Execute the remote PHP script
        $result = file_get_contents($script_url);
        echo $result;
    } else {
        echo "Invalid script URL";
    }
} else {
    echo "Script URL parameter is missing";
}

Keywords

Remote execution PHP script security risks cross-site scripting code injection

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