CVE-2026-16367

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-21. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: None knownExposed: 0

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

Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity100% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 24, 2026

Advisory Details (3)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Thunderbird 153 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-71/
generic

Security Vulnerabilities fixed in Firefox 153 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-68/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2050627

Vendor Advisories for CVE-2026-16367(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 41× in last 7d / 233× 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 292 total refreshes for this CVE.

  1. 2026-08-30 06:02 UTCGHSA enrichment
  2. 2026-08-30 02:23 UTCEG score recompute
  3. 2026-08-30 02:22 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-28 01:39 UTCGHSA enrichment
  7. 2026-08-27 21:19 UTCGHSA enrichment
  8. 2026-08-27 15:12 UTCEG score recompute
  9. 2026-08-27 15:12 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 11:27 UTCGHSA enrichment
  12. 2026-08-27 05:01 UTCGHSA enrichment
  13. 2026-08-27 01:19 UTCGHSA enrichment
  14. 2026-08-26 21:39 UTCGHSA enrichment
  15. 2026-08-26 14:57 UTCEG score recompute
  16. 2026-08-26 14:57 UTCGHSA enrichment
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-26 11:00 UTCGHSA enrichment
  19. 2026-08-26 05:55 UTCGHSA enrichment
  20. 2026-08-26 02:16 UTCGHSA enrichment
  21. 2026-08-25 22:37 UTCGHSA enrichment
  22. 2026-08-25 18:22 UTCEG score recompute
  23. 2026-08-25 18:22 UTCGHSA enrichment
  24. 2026-08-25 13:48 UTCEPSS rescore
  25. 2026-08-25 13:10 UTCGHSA enrichment
Show 75 more
  1. 2026-08-25 09:27 UTCGHSA enrichment
  2. 2026-08-25 05:49 UTCGHSA enrichment
  3. 2026-08-25 02:10 UTCGHSA enrichment
  4. 2026-08-24 22:32 UTCGHSA enrichment
  5. 2026-08-24 18:53 UTCGHSA enrichment
  6. 2026-08-24 14:59 UTCEG score recompute
  7. 2026-08-24 14:59 UTCGHSA enrichment
  8. 2026-08-24 11:21 UTCEG score recompute
  9. 2026-08-24 11:21 UTCGHSA enrichment
  10. 2026-08-24 07:42 UTCGHSA enrichment
  11. 2026-08-24 03:42 UTCGHSA enrichment
  12. 2026-08-23 23:22 UTCGHSA enrichment
  13. 2026-08-23 19:43 UTCGHSA enrichment
  14. 2026-08-23 16:04 UTCGHSA enrichment
  15. 2026-08-23 12:25 UTCGHSA enrichment
  16. 2026-08-23 08:46 UTCGHSA enrichment
  17. 2026-08-23 05:06 UTCGHSA enrichment
  18. 2026-08-23 01:27 UTCEG score recompute
  19. 2026-08-23 01:27 UTCGHSA enrichment
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-22 21:49 UTCGHSA enrichment
  22. 2026-08-22 18:11 UTCGHSA enrichment
  23. 2026-08-22 14:33 UTCGHSA enrichment
  24. 2026-08-22 10:27 UTCGHSA enrichment
  25. 2026-08-22 06:48 UTCGHSA enrichment
  26. 2026-08-22 03:09 UTCEG score recompute
  27. 2026-08-22 03:09 UTCGHSA enrichment
  28. 2026-08-21 23:49 UTCEPSS rescore
  29. 2026-08-21 23:30 UTCGHSA enrichment
  30. 2026-08-21 19:52 UTCGHSA enrichment
  31. 2026-08-21 16:13 UTCGHSA enrichment
  32. 2026-08-21 12:27 UTCGHSA enrichment
  33. 2026-08-21 08:48 UTCGHSA enrichment
  34. 2026-08-21 05:09 UTCGHSA enrichment
  35. 2026-08-21 01:31 UTCEG score recompute
  36. 2026-08-21 01:31 UTCGHSA enrichment
  37. 2026-08-20 22:55 UTCEPSS rescore
  38. 2026-08-20 21:52 UTCGHSA enrichment
  39. 2026-08-20 18:14 UTCEG score recompute
  40. 2026-08-20 18:14 UTCGHSA enrichment
  41. 2026-08-20 14:34 UTCGHSA enrichment
  42. 2026-08-20 09:41 UTCGHSA enrichment
  43. 2026-08-20 06:02 UTCGHSA enrichment
  44. 2026-08-20 02:23 UTCGHSA enrichment
  45. 2026-08-19 22:44 UTCEG score recompute
  46. 2026-08-19 22:44 UTCGHSA enrichment
  47. 2026-08-19 17:03 UTCEPSS rescore
  48. 2026-08-19 15:00 UTCGHSA enrichment
  49. 2026-08-19 11:21 UTCGHSA enrichment
  50. 2026-08-19 07:37 UTCGHSA enrichment
  51. 2026-08-19 03:50 UTCGHSA enrichment
  52. 2026-08-18 23:14 UTCGHSA enrichment
  53. 2026-08-18 19:34 UTCEG score recompute
  54. 2026-08-18 19:34 UTCGHSA enrichment
  55. 2026-08-18 13:48 UTCEPSS rescore
  56. 2026-08-18 09:28 UTCGHSA enrichment
  57. 2026-08-18 05:49 UTCGHSA enrichment
  58. 2026-08-18 01:43 UTCGHSA enrichment
  59. 2026-08-17 20:58 UTCGHSA enrichment
  60. 2026-08-17 14:33 UTCEG score recompute
  61. 2026-08-17 14:33 UTCGHSA enrichment
  62. 2026-08-17 13:47 UTCEPSS rescore
  63. 2026-08-17 10:54 UTCGHSA enrichment
  64. 2026-08-17 07:16 UTCGHSA enrichment
  65. 2026-08-17 03:38 UTCGHSA enrichment
  66. 2026-08-17 00:00 UTCGHSA enrichment
  67. 2026-08-16 20:22 UTCGHSA enrichment
  68. 2026-08-16 16:43 UTCEG score recompute
  69. 2026-08-16 16:43 UTCGHSA enrichment
  70. 2026-08-16 14:56 UTCEPSS rescore
  71. 2026-08-16 13:05 UTCGHSA enrichment
  72. 2026-08-16 09:26 UTCGHSA enrichment
  73. 2026-08-16 05:48 UTCEG score recompute
  74. 2026-08-16 05:48 UTCGHSA enrichment
  75. 2026-08-16 02:14 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16367?
CVE-2026-16367 is a critical vulnerability published on July 21, 2026. Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
When was CVE-2026-16367 disclosed?
CVE-2026-16367 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16367 actively exploited?
CVE-2026-16367 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 56.3% of all scored CVEs.
What is the CVSS score of CVE-2026-16367?
CVE-2026-16367 has a CVSS v3.1 base score of 10.0 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16367?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16367, 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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