The extensions implementation in Google Chrome before 13.0.782.107 does not properly validate the URL for the home page, which allows remote attackers to have an unspecified impact via a crafted extension.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14298
https://exchange.xforce.ibmcloud.com/vulnerabilities/68947
http://googlechromereleases.blogspot.com/2011/08/stable-channel-update.html