CVE-2009-1232 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-1232): The XUL parser in Mozilla Firefox 3.0.8 and earlier 3.0.x versions allows remote attackers to cause a denial of service (memory corruption) via an XML document composed of a long series of start-tags with no corresponding end-tags.
Nothing for mozilla team to do here, none of the affected versions are in-tree anymore.