DB backup controller laravel

BackupController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class BackupController extends Controller
{
    public function exportDB(Request $request) {
        $request->validate([
            'password' => 'required|string|min:15|max:15'
        ]);
        
        if ($request->password !== 'astrongpassword') {
            abort(403, "Sorry, You're not authorized to do this.");
            return;
        }
        
        $db_name = env('DB_DATABASE');
        $db_user = env('DB_USERNAME');
        $db_password = env('DB_PASSWORD');
        $today = date('Y-m-d');
        $command = "mysqldump --user={$db_user} --password={$db_password} {$db_name} > {$db_name}-{$today}.sql";
        exec($command);
        return response()->download("{$db_name}-{$today}.sql")->deleteFileAfterSend(true);
    }
}