Mozilla Firefox 0.9.1 and 0.9.2 allows remote web sites to spoof certificates of trusted web sites via redirects and Javascript that uses the "onunload" method.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9436
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3989
https://exchange.xforce.ibmcloud.com/vulnerabilities/16796
http://www.securityfocus.com/bid/15495
http://www.redhat.com/support/errata/RHSA-2004-421.html
http://www.novell.com/linux/security/advisories/2004_36_mozilla.html
http://www.mozilla.org/projects/security/known-vulnerabilities.html
http://www.gentoo.org/security/en/glsa/glsa-200408-22.xml
http://secunia.com/advisories/12160/
http://marc.info/?l=bugtraq&m=109900315219363&w=2
http://marc.info/?l=bugtraq&m=109087067730938&w=2
http://lists.grok.org.uk/pipermail/full-disclosure/2004-July/024372.html