browser/login/login_prompt.cc in Google Chrome before 4.0.249.89 populates an authentication dialog with credentials that were stored by Password Manager for a different web site, which allows user-assisted remote HTTP servers to obtain sensitive information via a URL that requires authentication, as demonstrated by a URL in the SRC attribute of an IMG element.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14407
https://exchange.xforce.ibmcloud.com/vulnerabilities/56216
http://www.vupen.com/english/advisories/2010/0361
http://www.vsecurity.com/advisory/20100215-1.txt
http://www.securityfocus.com/bid/38177
http://www.securityfocus.com/archive/1/509543/100/0/threaded
http://sites.google.com/a/chromium.org/dev/Home/chromium-security/chromium-security-bugs
http://securitytracker.com/id?1023583
http://secunia.com/advisories/38545
http://googlechromereleases.blogspot.com/2010/02/stable-channel-update.html