CVE-2019-11762

Name: CVE-2019-11762
Creator: NVD / NIST
Published: 2020-01-08T20:15:12.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2019-11762 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.61%

44.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-346

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 70.0
Mozilla	Firefox Esr	< 68.2
Mozilla	Thunderbird	< 68.2
Canonical	Ubuntu Linux	16.04

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1582857Issue Tracking, Permissions Required
https://security.gentoo.org/glsa/202003-10Third Party Advisory
https://usn.ubuntu.com/4335-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-33/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-34/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-35/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1582857Issue Tracking, Permissions Required
https://security.gentoo.org/glsa/202003-10Third Party Advisory
https://usn.ubuntu.com/4335-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-33/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-34/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-35/Vendor Advisory

Timeline

Published: Jan 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11762?

How severe is CVE-2019-11762?

CVE-2019-11762 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11762?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11762?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST