firefox is vulnerable to phishing attacks. The vulnerability exists as a web page containing malicious content could execute arbitrary JavaScript in the context of the site, possibly presenting misleading data to a user, or stealing sensitive information such as login credentials.
lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
secunia.com/advisories/34758
secunia.com/advisories/34843
secunia.com/advisories/34894
secunia.com/advisories/35065
secunia.com/advisories/36757
sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
www.debian.org/security/2009/dsa-1886
www.mandriva.com/security/advisories?name=MDVSA-2009:111
www.mozilla.org/security/announce/2009/mfsa2009-20.html
www.mozilla.org/security/known-vulnerabilities/firefox30.html#firefox3.0.9
www.redhat.com/security/updates/classification/#critical
www.redhat.com/support/errata/RHSA-2009-0436.html
www.securityfocus.com/bid/34656
www.securitytracker.com/id?1022097
www.vupen.com/english/advisories/2009/1125
access.redhat.com/errata/RHSA-2009:0436
bugzilla.mozilla.org/show_bug.cgi?id=483086
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11520
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6242
usn.ubuntu.com/764-1/
www.redhat.com/archives/fedora-package-announce/2009-April/msg00683.html