Google Chrome before 5.0.375.55 does not properly follow the Safe Browsing specification's requirements for canonicalization of URLs, which has unspecified impact and remote attack vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12113
http://googlechromereleases.blogspot.com/2010/05/stable-channel-update.html