Sandbox Bypass Vulnerability in Firefox < 68

CVE-2019-11716 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

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.

Learn more about our Web Application Penetration Testing UK.