The Chrome 8.0.552.215 update also include a new built-in PDF viewer that is secured in Chrome’s sandbox, according to a brief note posted by Google’s Jason Kersey.
Five of the 14 security flaws carry a “high-risk” rating. Details on the security vulnerabilities.
-  Possible pop-up blocker bypass. Low Risk.
-  Cross-origin video theft with canvas. Discovered and reported by Microsoft Vulnerability Research (MSVR). Medium Risk.
-  Browser crash with HTML5 databases. Low Risk.
-  Prevent excessive file dialogs, possibly leading to browser crash. Low Risk.
-  Use-after-free vulnerability in history handling. High Risk.
[Linux / Mac]
-  Make sure the “dangerous file types” list is up to date with the Windows platforms. Medium Risk.
-  Browser crash with HTTP proxy authentication. Low Risk.
-  Out-of-bounds read regression in WebM video support. Medium Risk.
-  Crash due to bad indexing with malformed video. High Risk.
-  Possible browser memory corruption via malicious privileged extension. Medium Risk.
 Use-after-free vulnerability with SVG animations. High Risk.
-  Use-after-free vulerability in mouse dragging event handling. High Risk.
-  Double-free vulnerability in XPath handling. High Risk.
As part of its ongoing bug-bounty program, Google shelled out $4,000 to purchase vulnerability data from the security research community.