A shared worker created from a "data:" URL in one tab can be shared by another tab with a different origin, bypassing the same-origin policy. This vulnerability affects Firefox < 59.Referenceshttp://www.securityfocus.com/bid/103386https://bugzilla.mozilla.org/show_bug.cgi?id=1419166http://www.securitytracker.com/id/1040514https://usn.ubuntu.com/3596-1/https://www.mozilla.org/security/advisories/mfsa2018-06/
