CVE-2022-1529

Name: CVE-2022-1529
Creator: NVD / NIST
Published: 2022-12-22T20:15:13.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 17.10%

Last modified Jun 17, 2026

CVE-2022-1529 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged parent process. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.. EPSS estimates a 17.10% chance of exploitation in the next 30 days.

Description

An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged parent process. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

17.10%

96.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 100.0.2
Mozilla	Firefox Esr	< 91.9.1
Mozilla	Thunderbird	< 91.9.1
Mozilla	Firefox	< 100.3.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1770048Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-19/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1770048Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-19/Vendor Advisory

Timeline

Published: Dec 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-1529?

How severe is CVE-2022-1529?

CVE-2022-1529 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 17.10% probability of exploitation in the next 30 days.

How do I fix CVE-2022-1529?

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-2022-1529?

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

Scan your code now

Source: NVD / NIST