CVE-2015-0807
The navigator.sendBeacon implementation in Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 processes HTTP 30x status codes for redirects after a preflight request has occurred, which allows remote attackers to bypass intended CORS access-control checks and conduct cross-site request forgery (CSRF) attacks via a crafted web site, a similar issue to CVE-2014-8638.
Date published : 2015-04-01
http://www.securityfocus.com/bid/73457
http://www.mozilla.org/security/announce/2015/mfsa2015-37.html