CVE-2026-12316

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-16. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: 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 152 and Thunderbird 152.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
15.9%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Thunderbird 152 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-60/
generic

Security Vulnerabilities fixed in Firefox 152 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-57/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2045496

Vendor Advisories for CVE-2026-12316(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 11× in last 7d / 161× 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 198 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12316?
CVE-2026-12316 is a critical vulnerability published on June 16, 2026. Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
When was CVE-2026-12316 disclosed?
CVE-2026-12316 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12316 actively exploited?
CVE-2026-12316 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12316?
CVE-2026-12316 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-12316?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12316, 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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