CVE-2019-11716

High

Description

Until explicitly accessed by script, window.globalThis is not enumerable and, as a result, is not visible to code such as Object.getOwnPropertyNames(window). Sites that deploy a sandboxing that depends on enumerating and freezing access to the window object may miss this, allowing their sandboxes to be bypassed. This vulnerability affects Firefox < 68.

SeverityHigh

CVSS8.3

Exploit probability—

Product

Mozilla Firefox

PublishedJul 23, 2019

First seenJul 23, 2019

How to fix

Update

mozilla firefox68.0 or later

Vendor advisories

security.gentoo.org/glsa/201908-12

Affected products

Product	Affected versions	Fixed in
mozilla firefox	v < 68.0	68.0

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