CVE-2024-8382

Name: CVE-2024-8382
Creator: NVD / NIST
Published: 2024-09-03T13:15:05.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2024-8382 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Internal browser event interfaces were exposed to web content when privileged EventHandler listener callbacks ran for those events. Web content that tried to use those interfaces would not be able to use them with elevated privileges, but their presence would indicate certain browser features had been used, such as when a user opened the Dev Tools console. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

Internal browser event interfaces were exposed to web content when privileged EventHandler listener callbacks ran for those events. Web content that tried to use those interfaces would not be able to use them with elevated privileges, but their presence would indicate certain browser features had been used, such as when a user opened the Dev Tools console. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.

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

0.56%

42.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-273

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 130.0
Mozilla	Firefox Esr	< 115.15
Mozilla	Firefox Esr	>= 128.0, < 128.2

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1906744Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2024-39/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-40/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-41/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-43/
https://www.mozilla.org/security/advisories/mfsa2024-44/
https://lists.debian.org/debian-lts-announce/2024/09/msg00012.html
https://lists.debian.org/debian-lts-announce/2024/09/msg00025.html

Timeline

Published: Sep 3, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-8382?

How severe is CVE-2024-8382?

CVE-2024-8382 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2024-8382?

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-2024-8382?

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

Scan your code now

Source: NVD / NIST