This update includes 10 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chromium security page for more information.
[$4000] High CVE-2016-5141 Address bar spoofing. Credit to Sergey Glazunov
[$4000] High CVE-2016-5142 Use-after-free in Blink. Credit to Sergey Glazunov
[$3000] High CVE-2016-5139 Heap overflow in pdfium. Credit to GiWan Go of Stealien
[$3500] High CVE-2016-5140 Heap overflow in pdfium. Credit to Ke Liu of Tencent's Xuanwu LAB
[$4000] Medium CVE-2016-5145 Same origin bypass for images in Blink. Credit to Sergey Glazunov
[$1000] Medium CVE-2016-5143 Parameter sanitization failure in DevTools. Credit to Gregory Panakkal
[$1000] Medium CVE-2016-5144 Parameter sanitization failure in DevTools. Credit to Gregory Panakkal
We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.
As usual, our ongoing internal security work was responsible for a wide range of fixes:
 CVE-2016-5146: Various fixes from internal audits, fuzzing and other initiatives.
I have added 52.0.2743.116 to the gentoo repo. Please stabilize it.
This issue was resolved and addressed in
GLSA 201610-09 at https://security.gentoo.org/glsa/201610-09
by GLSA coordinator Kristian Fiskerstrand (K_F).