Please consider to use fruitcake/laravel-cors, that is part of Laravel core.

A Simple Cross Origin Resource Sharing for Lumen Framework.

Note: That should works fine on Laravel Framework too, but the tests are performed to Lumen.

composer require "vluzrmos/lumen-cors=2.1.*"

On boostrap/app.php register the middleware:

$app->middleware([
	//...,
	'Vluzrmos\LumenCors\CorsMiddleware'
]);

You are free to use ::class notation.

And that is it!

That package stands to be free of configurations, then if you want a more configurable package please consider to see one of these:

• Barryvdh/LaravelCors
• Nordsoftware/LumenCors