MEDIUM
The FrameLoader::startLoad function in WebKit/Source/core/loader/FrameLoader.cpp in Blink, as used in Google Chrome before 51.0.2704.79, does not prevent frame navigations during DocumentLoader detach operations, which allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code.
http://googlechromereleases.blogspot.com/2016/06/stable-channel-update.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00005.html
http://www.debian.org/security/2016/dsa-3594
http://www.securitytracker.com/id/1036026
http://www.ubuntu.com/usn/USN-2992-1
https://access.redhat.com/errata/RHSA-2016:1201
Source: MITRE
Published: 2016-06-05
Updated: 2018-10-30
Type: CWE-284
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8
Severity: HIGH