Convert 403 errors to 404 errors

src/Event/Subscriber/AccessDeniedToNotFoundSubscriber.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Wallabag\Event\Subscriber;
+
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\ExceptionEvent;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+class AccessDeniedToNotFoundSubscriber implements EventSubscriberInterface
+{
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            KernelEvents::EXCEPTION => 'onKernelException',
+        ];
+    }
+
+    public function onKernelException(ExceptionEvent $event): void
+    {
+        $exception = $event->getThrowable();
+
+        if ($exception instanceof AccessDeniedHttpException) {
+            $notFoundException = new NotFoundHttpException('', $exception);
+            $event->setThrowable($notFoundException);
+        }
+    }
+}