SeaMonkey is vulnerable to cross-site scripting (XSS). The attack is possible because remote attackers can perform cross-origin keystroke capture, and possibly conduct cross-site scripting (XSS) attacks, by using the addEventListener and setTimeout functions in conjunction with a wrapped object.
www.mozilla.org/security/announce/2010/mfsa2010-12.html
www.redhat.com/security/updates/classification/#critical
www.securityfocus.com/bid/38918
www.vupen.com/english/advisories/2010/0692
access.redhat.com/errata/RHSA-2010:0113
bugzilla.mozilla.org/show_bug.cgi?id=531364
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10773
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7743