CVE 2009-1724
Cross-site scripting (XSS) vulnerability in WebKit in Apple Safari before 4.0.2, as used on iPhone OS before 3.1, iPhone OS before 3.1.1 for iPod touch, and other platforms, allows remote attackers to inject arbitrary web script or HTML via vectors related to parent and top objects.
See the 
CVE page on Mitre.org
for more details.
