What security issues should be considered when using a router without mapping in PHP?

When using a router without mapping in PHP, one of the main security issues to consider is the lack of control over the URLs that are being accessed, potentially leading to unauthorized access to sensitive data or functionalities. To solve this issue, it is recommended to implement a whitelist of allowed routes and validate incoming requests against this list to ensure that only authorized routes are accessed. 

// Define a whitelist of allowed routes
$allowedRoutes = [
    'home',
    'about',
    'contact',
];

// Get the requested route from the URL
$route = isset($_GET['route']) ? $_GET['route'] : 'home';

// Validate if the requested route is in the whitelist
if (!in_array($route, $allowedRoutes)) {
    // Redirect to a default error page or handle the unauthorized access in another way
    header('Location: error.php');
    exit;
}

// Process the request based on the validated route
switch ($route) {
    case 'home':
        // Handle the home route
        break;
    case 'about':
        // Handle the about route
        break;
    case 'contact':
        // Handle the contact route
        break;
}

Keywords

router mapping security PHP vulnerabilities

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