CVE-2009-1711 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-1711): WebKit in Apple Safari before 4.0 does not properly initialize memory for Attr DOM objects, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted HTML document.
Presumably all affected versions are gone from tree. Closing as discussed with keytoaster.