Google V8, as used in Google Chrome before 14.0.835.163, does not properly restrict access to built-in objects, which has unspecified impact and remote attack vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14431
https://exchange.xforce.ibmcloud.com/vulnerabilities/69889
http://googlechromereleases.blogspot.com/2011/09/stable-channel-update_16.html