Mozilla Firefox 1.5 before 1.5.0.2 and SeaMonkey before 1.0.1 causes certain windows to become translucent due to an interaction between XUL content windows and the history mechanism, which might allow user-assisted remote attackers to trick users into executing arbitrary code.
secunia.com/advisories/19631
secunia.com/advisories/19649
secunia.com/advisories/22066
www.mozilla.org/security/announce/2006/mfsa2006-29.html
www.securityfocus.com/archive/1/446658/100/200/threaded
www.securityfocus.com/bid/17516
www.vupen.com/english/advisories/2006/1356
www.vupen.com/english/advisories/2006/3748
www.vupen.com/english/advisories/2008/0083
bugzilla.mozilla.org/show_bug.cgi?id=327014
exchange.xforce.ibmcloud.com/vulnerabilities/25827
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1471