CVE-2026-84130

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 3, 2026

Advisory Details (5)

Auto-updated Sep 3, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Thunderbird 153.2 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-88/
generic

Security Vulnerabilities fixed in Thunderbird 155 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-86/
generic

Security Vulnerabilities fixed in Firefox ESR 153.2 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-85/
generic

Security Vulnerabilities fixed in Firefox 155 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-82/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2057834

Vendor Advisories for CVE-2026-84130(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 96× 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.

  1. 2026-09-25 04:01 UTCGHSA enrichment
  2. 2026-09-24 16:26 UTCEG score recompute
  3. 2026-09-24 16:26 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 04:51 UTCEG score recompute
  6. 2026-09-24 04:51 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 17:17 UTCGHSA enrichment
  9. 2026-09-23 05:41 UTCGHSA enrichment
  10. 2026-09-22 18:07 UTCEG score recompute
  11. 2026-09-22 18:07 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 05:35 UTCEG score recompute
  14. 2026-09-22 05:35 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 17:59 UTCGHSA enrichment
  17. 2026-09-21 06:24 UTCEG score recompute
  18. 2026-09-21 06:24 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 18:49 UTCGHSA enrichment
  21. 2026-09-20 07:14 UTCGHSA enrichment
  22. 2026-09-19 19:21 UTCEG score recompute
  23. 2026-09-19 19:21 UTCGHSA enrichment
  24. 2026-09-19 07:33 UTCGHSA enrichment
  25. 2026-09-18 19:58 UTCEG score recompute
Show 71 more
  1. 2026-09-18 19:58 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 08:23 UTCGHSA enrichment
  4. 2026-09-17 20:46 UTCEG score recompute
  5. 2026-09-17 20:46 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 09:04 UTCGHSA enrichment
  8. 2026-09-16 21:29 UTCEG score recompute
  9. 2026-09-16 21:29 UTCGHSA enrichment
  10. 2026-09-16 14:09 UTCEPSS rescore
  11. 2026-09-16 09:07 UTCEG score recompute
  12. 2026-09-16 09:07 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 20:54 UTCGHSA enrichment
  15. 2026-09-15 08:47 UTCEG score recompute
  16. 2026-09-15 08:47 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 21:12 UTCGHSA enrichment
  20. 2026-09-14 09:27 UTCGHSA enrichment
  21. 2026-09-13 21:53 UTCEG score recompute
  22. 2026-09-13 21:53 UTCGHSA enrichment
  23. 2026-09-13 10:18 UTCGHSA enrichment
  24. 2026-09-12 22:43 UTCEG score recompute
  25. 2026-09-12 22:43 UTCGHSA enrichment
  26. 2026-09-12 11:08 UTCGHSA enrichment
  27. 2026-09-11 23:18 UTCEG score recompute
  28. 2026-09-11 23:18 UTCGHSA enrichment
  29. 2026-09-11 14:53 UTCEPSS rescore
  30. 2026-09-11 14:53 UTCEPSS rescore
  31. 2026-09-11 10:49 UTCEG score recompute
  32. 2026-09-11 10:49 UTCGHSA enrichment
  33. 2026-09-10 23:12 UTCGHSA enrichment
  34. 2026-09-10 11:37 UTCEG score recompute
  35. 2026-09-10 11:37 UTCGHSA enrichment
  36. 2026-09-09 23:39 UTCGHSA enrichment
  37. 2026-09-09 11:02 UTCGHSA enrichment
  38. 2026-09-08 23:27 UTCEG score recompute
  39. 2026-09-08 23:26 UTCGHSA enrichment
  40. 2026-09-08 22:01 UTCEPSS rescore
  41. 2026-09-08 03:09 UTCEG score recompute
  42. 2026-09-08 03:09 UTCGHSA enrichment
  43. 2026-09-07 15:33 UTCGHSA enrichment
  44. 2026-09-07 03:58 UTCGHSA enrichment
  45. 2026-09-06 16:24 UTCEG score recompute
  46. 2026-09-06 16:24 UTCGHSA enrichment
  47. 2026-09-06 13:48 UTCEPSS rescore
  48. 2026-09-06 04:49 UTCGHSA enrichment
  49. 2026-09-05 17:14 UTCEG score recompute
  50. 2026-09-05 17:14 UTCGHSA enrichment
  51. 2026-09-05 15:31 UTCEPSS rescore
  52. 2026-09-05 05:38 UTCGHSA enrichment
  53. 2026-09-04 18:03 UTCEG score recompute
  54. 2026-09-04 18:03 UTCGHSA enrichment
  55. 2026-09-04 06:28 UTCEG score recompute
  56. 2026-09-04 06:27 UTCGHSA enrichment
  57. 2026-09-04 05:07 UTCEPSS rescore
  58. 2026-09-03 18:48 UTCEG score recompute
  59. 2026-09-03 18:47 UTCGHSA enrichment
  60. 2026-09-03 17:34 UTCEG score recompute▲ 7.50
  61. 2026-09-03 17:33 UTCGHSA enrichment
  62. 2026-09-03 17:33 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  63. 2026-09-02 14:12 UTCEPSS rescore
  64. 2026-09-01 22:19 UTCGHSA enrichment
  65. 2026-09-01 22:18 UTCNVD update
  66. 2026-09-01 21:43 UTCGHSA enrichment
  67. 2026-09-01 21:42 UTCMITRE cvelistV5
  68. 2026-09-01 21:09 UTCGHSA enrichment
  69. 2026-09-01 13:35 UTCNVD update
  70. 2026-09-01 12:44 UTCEG score recompute
  71. 2026-09-01 12:41 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-84130?
CVE-2026-84130 is a high vulnerability published on September 1, 2026. Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
When was CVE-2026-84130 disclosed?
CVE-2026-84130 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84130 actively exploited?
CVE-2026-84130 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.6% of all scored CVEs.
What is the CVSS score of CVE-2026-84130?
CVE-2026-84130 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84130?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84130, 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.

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