Mozilla Firefox 3.x before 3.0.1 allows remote attackers to inject arbitrary web script into a chrome document via unspecified vectors, as demonstrated by injection into a XUL error page. NOTE: this can be leveraged to execute arbitrary code using CVE-2008-2933.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44199
https://bugzilla.mozilla.org/show_bug.cgi?id=441169
http://www.securityfocus.com/bid/30244
http://www.mozilla.org/security/announce/2008/mfsa2008-35.html