WebExtensions can bypass security checks to load privileged URLs and potentially escape the WebExtension sandbox. This vulnerability affects Firefox < 50.Referenceshttp://www.securityfocus.com/bid/94337http://www.securitytracker.com/id/1037298https://bugzilla.mozilla.org/show_bug.cgi?id=1289273https://www.mozilla.org/security/advisories/mfsa2016-89/
