Laravel Middleware to protect your app against Cross-site scripting (XSS). It sanitizes request input by utilising the Security Core package, and it can sanatize Blade echo statements as well.
- PHP 8.2 and higher
- Laravel 10 and higher
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You can install the package via composer:
composer require protonemedia/laravel-xss-protectionYou may publish the config file with:
php artisan vendor:publish --tag="xss-protection-config"You may use the ProtoneMedia\LaravelXssProtection\Middleware\XssCleanInput middleware in the route that handles the form submission.
use App\Http\Controllers\CreateAccountController;
use ProtoneMedia\LaravelXssProtection\Middleware\XssCleanInput;
Route::post('account', CreateAccountController::class)->middleware(XssCleanInput::class);If your app has a lot of forms handled by many different controllers, you could opt to register it as global middleware.
// inside app\Http\Kernel.php
protected $middleware = [
// ...
\ProtoneMedia\LaravelXssProtection\Middleware\XssCleanInput::class,
];If you register the middleware globally, you may exclude requests by using the static skipWhen method. You can add a callback to interact with the request:
XssCleanInput::skipWhen(function (Request $request) {
return $request->is('admin.*');
});You can also exclude keys by using the static skipKeyWhen method. This also allows you to interact with the value and request.
XssCleanInput::skipKeyWhen(function (string $key, $value, Request $request) {
return in_array($key, [
'current_password',
'password',
'password_confirmation',
]);
});By default, the middleware allows file uploads. However, you may disallow file uploads by changing the middleware.allow_file_uploads configuration key to false.
By default, the middleware sanitizes Blade echo statements like {{ $name }}, {{{ $name }}}, and {!! $name !!}. You may allow echo statements by changing the middleware.allow_blade_echoes configuration key to true.
By default, the middleware transforms malicious input to null. You may configure the middleware to only transform the malicious part by setting the middleware.completely_replace_malicious_input configuration key to false. That way, an input string like hey <script>alert('laravel')</script> will be transformed to hey instead of null.
Instead of transforming malicious input, you may configure the middleware to terminate the request whenever anything malicious has been found. You may do this by setting the middleware.terminate_request_on_malicious_input to true, which will throw an HttpException with status code 403.
You may configure the middleware to dispatch an event whenever malicious input has been found. Setting the middleware.dispatch_event_on_malicious_input to true will dispatch an ProtoneMedia\LaravelXssProtection\Events\MaliciousInputFound event with the sanitized keys, the original request and the sanitized request.
use Illuminate\Support\Facades\Event;
use ProtoneMedia\LaravelXssProtection\Events\MaliciousInputFound;
Event::listen(function (MaliciousInputFound $event) {
$event->sanitizedKeys;
$event->originalRequest;
$event->sanitizedRequest;
});As of version 1.6.0, you may provide additional configuration for the voku/anti-xss package. You may do this by filling the middleware.anti_xss key. This is similar to the Laravel Security package, which this package used to rely on.
'anti_xss' => [
'evil' => [
'attributes' => ['href'],
'tags' => ['video'],
],
'replacement' => '*redacted*',
]Please see CHANGELOG for more information about what has changed recently.
$ composer testPlease see CONTRIBUTING for details.
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If you discover any security-related issues, please email [email protected] instead of using the issue tracker. Please do not email any questions, open an issue if you have a question.
The MIT License (MIT). Please see License File for more information.
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