CVE-2026-8969

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
20.8%
KEV
Not listed

Published

May 19, 2026

Last Modified

May 20, 2026

Advisory Details (2)

Auto-updated May 19, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Firefox 151 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-46/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2031123

Vendor Advisories for CVE-2026-8969(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 8× in last 7d / 68× 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 140 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8969?
CVE-2026-8969 is a high vulnerability published on May 19, 2026. Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
When was CVE-2026-8969 disclosed?
CVE-2026-8969 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8969 actively exploited?
CVE-2026-8969 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8969?
CVE-2026-8969 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-8969?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8969, 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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