The extension implementation in Google Chrome before 17.0.963.46 does not properly handle sandboxed origins, which might allow remote attackers to bypass the Same Origin Policy via a crafted extension.

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-3956
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14906
• http://code.google.com/p/chromium/issues/detail?id=103630
• http://googlechromereleases.blogspot.com/2012/02/stable-channel-update.html