CVE-2009-1840
Mozilla Firefox before 3.0.11, Thunderbird, and SeaMonkey do not check content policy before loading a script file into a XUL document, which allows remote attackers to bypass intended access restrictions via a crafted HTML document, as demonstrated by a "web bug" in an e-mail message, or web script or an advertisement in a web page.
Date published : 2009-06-12
http://www.securityfocus.com/bid/35326
http://www.mozilla.org/security/announce/2009/mfsa2009-31.html