diff --git a/core/lib/Drupal/Core/Controller/ExceptionController.php b/core/lib/Drupal/Core/Controller/ExceptionController.php
index 8515af0..442cc3e 100644
--- a/core/lib/Drupal/Core/Controller/ExceptionController.php
+++ b/core/lib/Drupal/Core/Controller/ExceptionController.php
@@ -92,6 +92,7 @@ public function on403Html(FlattenException $exception, Request $request) {
       }
 
       $subrequest = Request::create('/' . $path, 'get', array('destination' => $system_path), $request->cookies->all(), array(), $request->server->all());
+      $subrequest->attributes->set('_account', $request->attributes->get('_account'));
 
       // The active trail is being statically cached from the parent request to
       // the subrequest, like any other static.  Unfortunately that means the
@@ -165,6 +166,7 @@ public function on404Html(FlattenException $exception, Request $request) {
       // @todo The create() method expects a slash-prefixed path, but we store a
       //   normal system path in the site_404 variable.
       $subrequest = Request::create('/' . $path, 'get', array(), $request->cookies->all(), array(), $request->server->all());
+      $subrequest->attributes->set('_account', $request->attributes->get('_account'));
 
       // The active trail is being statically cached from the parent request to
       // the subrequest, like any other static.  Unfortunately that means the
diff --git a/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php b/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
index 4ee5df4..80e1673 100644
--- a/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
+++ b/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
@@ -56,6 +56,7 @@ public function onKernelException(GetResponseForExceptionEvent $event)
             'exception'   => FlattenException::create($exception),
             'logger'      => $this->logger instanceof DebugLoggerInterface ? $this->logger : null,
             'format'      => $request->getRequestFormat(),
+            '_account'    => $request->attributes->get('_account'),
         );
 
         $request = $request->duplicate(null, null, $attributes);