CVE-2024-8382: firefox — Fix

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.

Is your site exposed to CVE-2024-8382?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-273 CWE-273

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 130.0
mozilla	firefox_esr	< 115.15
mozilla	firefox_esr	128.0 — 128.2

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2024-39/ https://www.mozilla.org/security/advisories/mfsa2024-40/ https://www.mozilla.org/security/advisories/mfsa2024-41/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=1906744 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

Frequently Asked Questions

What is CVE-2024-8382? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-8382? +

CVE-2024-8382 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-8382? +

CVE-2024-8382 affects products from mozilla, specifically: firefox, firefox_esr. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-8382? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-1003

A potential vulnerability has been identified in HP Anyware Agent for Linux which might allow for authentication bypass which may …

CVE-2026-58086

As an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user. Tracing …

CVE-2026-32107 8.8

xrdp is an open source RDP server. In versions through 0.10.5, the session execution component did not properly handle an …

CVE-2025-27396 8.8

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0). Affected devices do not properly limit the …

CVE-2026-61897 7.8

An Ubuntu-specific patch to AccountsService before 23.13.9-8ubuntu7 only partially drops privileges before launching language helper scripts. It changes the effective …

CVE-2026-0099 7.8

In onNullBinding of HostEmulationManager.java, there is a possible way to launch an activity from the background due to a logic …

CVE-2024-8382