Google Chrome before 26.0.1410.43 does not properly handle active content in an EMBED element during a copy-and-paste operation, which allows user-assisted remote attackers to have an unspecified impact via a crafted web site.
https://src.chromium.org/viewvc/chrome?view=rev&revision=176856
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16601
https://code.google.com/p/chromium/issues/detail?id=112325
https://chromiumcodereview.appspot.com/11884025
http://support.apple.com/kb/HT5934
http://support.apple.com/kb/HT5785
http://secunia.com/advisories/54886
http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2013/Jun/msg00001.html
http://googlechromereleases.blogspot.com/2013/03/stable-channel-update_26.html