CVE-2024-8382

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2024-09-03. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

September 3, 2024

Last Modified

November 4, 2025

Advisory Details (8)

Auto-updated Aug 24, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 3882-1] thunderbird security update

https://lists.debian.org/debian-lts-announce/2024/09/msg00025.html
generic Patch Available

[SECURITY] [DLA 3869-1] firefox-esr security update

https://lists.debian.org/debian-lts-announce/2024/09/msg00012.html
generic

Security Vulnerabilities fixed in Thunderbird 115.15 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2024-44/
generic

Security Vulnerabilities fixed in Thunderbird 128.2 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2024-43/
generic

Security Vulnerabilities fixed in Firefox ESR 115.15 — Mozilla

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

Security Vulnerabilities fixed in Firefox ESR 128.2 — Mozilla

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

Security Vulnerabilities fixed in Firefox 130 — Mozilla

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

1906744 - (CVE-2024-8382) ChromeOnly event interfaces become exposed to web content when chromeEventHandler listener callbacks run

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

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxul-ext-lightning (1:115.15.0+build1-0ubuntu0.22.04.1) @ jammy2026-05-23ubuntu
ubuntufirefox-mozsymbols (130.0+build2-0ubuntu0.20.04.1) @ focal2026-05-23ubuntu
redhatthunderbird-0:128.2.0-1.el8_62024-09-19redhat
redhatfirefox-0:128.2.0-1.el8_62024-09-19redhat
redhatfirefox-0:128.2.0-1.el7_92024-09-19redhat
redhatfirefox-0:128.2.0-1.el8_82024-09-19redhat
redhatfirefox-0:128.2.0-1.el8_42024-09-19redhat
redhatfirefox-0:128.2.0-1.el8_22024-09-19redhat
redhatfirefox-0:128.2.0-1.el9_02024-09-18redhat
redhatfirefox-0:128.2.0-1.el9_22024-09-18redhat
redhatthunderbird-0:128.2.0-1.el9_02024-09-17redhat
redhatthunderbird-0:128.2.0-1.el8_82024-09-17redhat
redhatthunderbird-0:128.2.0-1.el8_22024-09-17redhat
redhatthunderbird-0:128.2.0-1.el8_42024-09-17redhat
redhatthunderbird-0:128.2.0-1.el9_22024-09-17redhat
redhatfirefox-0:128.2.0-1.el9_42024-09-16redhat
redhatthunderbird-0:128.2.0-1.el8_102024-09-16redhat
redhatthunderbird-0:128.2.0-1.el9_42024-09-16redhat
redhatfirefox-0:128.2.0-1.el8_102024-09-16redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
firefox-esr102.1.0esr-1 ... 91.9.1esr-1~deb9u1 (169 versions)115.15.0esr-1~deb11u1—
thunderbird1:102.0.1-1 ... 1:91.9.0-1~deb9u1 (203 versions)1:115.15.0-1~deb11u1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
firefox-esr102.11.0esr-1 ... 115.9.1esr-1~deb12u1 (76 versions)115.15.0esr-1~deb12u1—
thunderbird1:102.11.0-1 ... 1:115.9.0-1~deb12u1 (88 versions)1:115.15.0-1~deb12u1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—115.15.0esr-1—
thunderbird—1:128.2.0esr-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
firefox-esr—115.15.0esr-1—
thunderbird—1:128.2.0esr-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(19)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 141 total refreshes for this CVE.

  1. 2026-08-25 13:47 UTCEPSS rescore
  2. 2026-08-24 14:15 UTCEPSS rescore
  3. 2026-08-23 00:18 UTCEPSS rescore
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  11. 2026-08-15 11:37 UTCOSV refresh
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  1. 2026-08-01 04:14 UTCEPSS rescore
  2. 2026-07-31 00:21 UTCOSV refresh
  3. 2026-07-30 16:26 UTCEPSS rescore
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  5. 2026-07-28 15:35 UTCEPSS rescore
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  11. 2026-07-23 02:46 UTCEG score recompute
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  25. 2026-07-15 01:59 UTCEPSS rescore
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  27. 2026-07-13 22:29 UTCEPSS rescore
  28. 2026-07-13 22:29 UTCEPSS rescore
  29. 2026-07-13 09:07 UTCOSV refresh
  30. 2026-07-13 06:12 UTCEPSS rescore
  31. 2026-07-12 05:45 UTCEPSS rescore
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  49. 2026-06-28 04:55 UTCEPSS rescore
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  51. 2026-06-27 03:08 UTCEPSS rescore
  52. 2026-06-25 13:49 UTCEPSS rescore
  53. 2026-06-25 13:49 UTCEPSS rescore
  54. 2026-06-25 00:31 UTCOSV refresh
  55. 2026-06-24 14:04 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2024-8382?
CVE-2024-8382 is a high vulnerability published on September 3, 2024. 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…
When was CVE-2024-8382 disclosed?
CVE-2024-8382 was first published in the National Vulnerability Database on September 3, 2024, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-8382 actively exploited?
CVE-2024-8382 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.2% of all scored CVEs.
What is the CVSS score of CVE-2024-8382?
CVE-2024-8382 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2024-8382?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-8382, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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