The child frames in Mozilla Firefox before 1.5.0.10 and 2.x before 2.0.0.2, and SeaMonkey before 1.0.8 inherit the default charset from the parent window, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated using the UTF-7 character set.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10086
https://issues.rpath.com/browse/RPL-1103
http://www.vupen.com/english/advisories/2007/0718
http://www.ubuntu.com/usn/usn-428-1
http://www.securitytracker.com/id?1017702
http://www.securityfocus.com/bid/22694
http://www.securityfocus.com/archive/1/461336/100/0/threaded
http://www.securityfocus.com/archive/1/461076/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2007-0108.html
http://www.redhat.com/support/errata/RHSA-2007-0097.html
http://www.redhat.com/support/errata/RHSA-2007-0079.html
http://www.redhat.com/support/errata/RHSA-2007-0078.html
http://www.novell.com/linux/security/advisories/2007_22_mozilla.html
http://www.mozilla.org/security/announce/2007/mfsa2007-02.html
http://www.mandriva.com/security/advisories?name=MDKSA-2007:050
http://www.hardened-php.net/advisory_032007.142.html
http://www.debian.org/security/2007/dsa-1336
http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.374851
http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.338131
http://secunia.com/advisories/25588
http://secunia.com/advisories/24650
http://secunia.com/advisories/24457
http://secunia.com/advisories/24455
http://secunia.com/advisories/24395
http://secunia.com/advisories/24384
http://secunia.com/advisories/24343
http://secunia.com/advisories/24342
http://secunia.com/advisories/24333
http://secunia.com/advisories/24328
http://secunia.com/advisories/24320
http://secunia.com/advisories/24290
http://secunia.com/advisories/24287
http://secunia.com/advisories/24205
http://rhn.redhat.com/errata/RHSA-2007-0077.html
http://lists.suse.com/archive/suse-security-announce/2007-Mar/0001.html
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742