The Web Workers implementation in Google Chrome before 10.0.648.127 allows remote attackers to bypass the Same Origin Policy via unspecified vectors, related to an "error message leak."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14398
https://exchange.xforce.ibmcloud.com/vulnerabilities/65954
http://www.vupen.com/english/advisories/2011/0628
http://www.securityfocus.com/bid/46785
http://support.apple.com/kb/HT4999
http://support.apple.com/kb/HT4808
http://lists.apple.com/archives/security-announce/2011//Jul/msg00002.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
http://googlechromereleases.blogspot.com/2011/03/chrome-stable-release.html