Unspecified vulnerability in Google Chrome before 5.0.375.55 allows remote attackers to bypass the whitelist-mode plugin blocker via unknown vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12126
http://googlechromereleases.blogspot.com/2010/05/stable-channel-update.html