Drupal 8 before 8.2.8 and 8.3 before 8.3.1 allows critical access bypass by authenticated users if the RESTful Web Services (rest) module is enabled and the site allows PATCH requests.Referenceshttp://www.securityfocus.com/bid/97941https://www.drupal.org/SA-CORE-2017-002http://www.securitytracker.com/id/1038371
