CVE-2024-8382

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

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, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2024-49138 (ENISA EUVD) · GHSA-ph32-hgpc-r5j4 (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-26). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 3, 2024

Last Modified

November 4, 2025

Advisory Details (8)

Auto-updated Aug 24, 2026
Patch available.
Web pageMentions a patch (unverified)

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

https://lists.debian.org/debian-lts-announce/2024/09/msg00025.html
Web pageMentions a patch (unverified)

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

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

Security Vulnerabilities fixed in Thunderbird 115.15 — Mozilla

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

Security Vulnerabilities fixed in Thunderbird 128.2 — Mozilla

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

Security Vulnerabilities fixed in Firefox ESR 115.15 — Mozilla

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

Security Vulnerabilities fixed in Firefox ESR 128.2 — Mozilla

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

Security Vulnerabilities fixed in Firefox 130 — Mozilla

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

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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntufirefox-mozsymbols (130.0+build2-0ubuntu0.20.04.1) @ focal2026-10-27ubuntu
ubuntuxul-ext-lightning (1:115.15.0+build1-0ubuntu0.22.04.1) @ jammy2026-10-27ubuntu
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_22024-09-19redhat
redhatfirefox-0:128.2.0-1.el8_42024-09-19redhat
redhatthunderbird-0:128.2.0-1.el8_62024-09-19redhat
redhatfirefox-0:128.2.0-1.el8_82024-09-19redhat
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.el8_82024-09-17redhat
redhatthunderbird-0:128.2.0-1.el9_22024-09-17redhat
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_02024-09-17redhat
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
redhatfirefox-0:128.2.0-1.el9_42024-09-16redhat

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 rangeFix by version rangeDependents
firefox-esr102.1.0esr-1 ... 91.9.1esr-1~deb9u1 (169 versions)
  • every version up to 115.15.0esr-1~deb11u1: fixed in 115.15.0esr-1~deb11u1
—
thunderbird1:102.0.1-1 ... 1:91.9.0-1~deb9u1 (203 versions)
  • every version up to 1:115.15.0-1~deb11u1: fixed in 1:115.15.0-1~deb11u1
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr102.11.0esr-1 ... 115.9.1esr-1~deb12u1 (76 versions)
  • every version up to 115.15.0esr-1~deb12u1: fixed in 115.15.0esr-1~deb12u1
—
thunderbird1:102.11.0-1 ... 1:115.9.0-1~deb12u1 (88 versions)
  • every version up to 1:115.15.0-1~deb12u1: fixed in 1:115.15.0-1~deb12u1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 115.15.0esr-1: fixed in 115.15.0esr-1
—
thunderbird—
  • every version up to 1:128.2.0esr-1: fixed in 1:128.2.0esr-1
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
firefox-esr—
  • every version up to 115.15.0esr-1: fixed in 115.15.0esr-1
—
thunderbird—
  • every version up to 1:128.2.0esr-1: fixed in 1:128.2.0esr-1
—

Weakness Classification(1)

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

All Vendor Advisories

(19)

Data Freshness Timeline

(refreshed 10× in last 7d / 42× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 218 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 122 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-10-27 12:13 UTCEG score recompute
  9. 2026-10-27 12:13 UTCVendor advisory
  10. 2026-10-27 12:12 UTCGHSA enrichmentGHSA-ph32-hgpc-r5j4 · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-10-25 16:51 UTCEG score recompute
  13. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  15. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  16. 2026-10-22 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  17. 2026-10-21 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  18. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  19. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  20. 2026-10-19 06:49 UTCEG score recompute
  21. 2026-10-19 06:49 UTCVendor advisory
  22. 2026-10-19 06:49 UTCGHSA enrichmentGHSA-ph32-hgpc-r5j4 · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-10-18 05:55 UTCEG score recompute
  24. 2026-10-17 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-10-16 16:37 UTCEPSS rescoreEPSS 0.6% · 47th percentile
Show 71 more
  1. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  2. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  3. 2026-10-13 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  4. 2026-10-12 17:31 UTCEG score recompute
  5. 2026-10-12 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-11 21:00 UTCEG score recompute
  7. 2026-10-11 19:10 UTCEG score recompute
  8. 2026-10-11 15:51 UTCEG score recompute
  9. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-10 00:33 UTCOSV refresh
  12. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-08 17:08 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  15. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  16. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  17. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  18. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-10-02 17:56 UTCEG score recompute
  20. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  21. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  22. 2026-09-29 15:18 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  23. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  24. 2026-09-27 13:44 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  26. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  27. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  28. 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  29. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  30. 2026-09-20 08:43 UTCOSV refresh
  31. 2026-09-19 15:41 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  32. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  33. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  34. 2026-09-16 05:13 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  35. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  36. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  37. 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  38. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  39. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  40. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  41. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  42. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  43. 2026-09-04 13:59 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  44. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  45. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  46. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  47. 2026-09-01 11:38 UTCOSV refresh
  48. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  49. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  50. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  51. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  52. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  53. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  54. 2026-08-24 14:15 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  55. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  56. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  57. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  58. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  59. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  60. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  61. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  62. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  63. 2026-08-15 11:37 UTCOSV refresh
  64. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  65. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  66. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  67. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  68. 2026-08-09 13:45 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  69. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  70. 2026-08-07 16:26 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  71. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.6% · 43rd percentile

Frequently asked(5)

What is CVE-2024-8382?
CVE-2024-8382 is a high-severity vulnerability; its CVE record was 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 the CVE record for CVE-2024-8382 published?
The CVE record for CVE-2024-8382 was published on September 3, 2024. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 4, 2025; the record at its source may have been updated since.
Is CVE-2024-8382 actively exploited?
CVE-2024-8382 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-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?
A fix for CVE-2024-8382 is available: update to the fixed version the vendor names in its advisory.

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