CVE-2012-1966
Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not have the same context-menu restrictions for data: URLs as for javascript: URLs, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted URL.
Date published : 2012-07-18
http://www.securityfocus.com/bid/54577
http://www.mozilla.org/security/announce/2012/mfsa2012-46.html