The getSVGDocument method in Google Chrome before 3.0.195.21 omits an unspecified "access check," which allows remote web servers to bypass the Same Origin Policy and conduct cross-site scripting attacks via unknown vectors, related to a user's visit to a different web server that hosts an SVG document.
http://www.securityfocus.com/bid/36416
http://secunia.com/advisories/36770
http://googlechromereleases.blogspot.com/2009/09/stable-channel-update.html