CVE-2026-74968

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic

Security Vulnerabilities fixed in Firefox ESR 153.1 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-77/
generic

Security Vulnerabilities fixed in Firefox 154 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-74/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2055738

Vendor Advisories for CVE-2026-74968(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 14× in last 7d / 66× 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. 2026-09-18 23:15 UTCEG score recompute
  2. 2026-09-18 23:15 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 21:52 UTCEG score recompute
  5. 2026-09-17 21:52 UTCGHSA enrichment
  6. 2026-09-16 15:10 UTCEG score recompute
  7. 2026-09-16 15:10 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-15 12:04 UTCEG score recompute
  10. 2026-09-15 12:04 UTCGHSA enrichment
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-14 10:40 UTCGHSA enrichment
  13. 2026-09-13 09:16 UTCEG score recompute
  14. 2026-09-13 09:16 UTCGHSA enrichment
  15. 2026-09-12 15:02 UTCEPSS rescore
  16. 2026-09-12 07:53 UTCEG score recompute
  17. 2026-09-12 07:52 UTCGHSA enrichment
  18. 2026-09-11 14:53 UTCEPSS rescore
  19. 2026-09-11 06:18 UTCEG score recompute
  20. 2026-09-11 06:18 UTCGHSA enrichment
  21. 2026-09-10 09:35 UTCEPSS rescore
  22. 2026-09-10 04:55 UTCGHSA enrichment
  23. 2026-09-09 03:31 UTCEG score recompute
  24. 2026-09-09 03:31 UTCGHSA enrichment
  25. 2026-09-08 22:01 UTCEPSS rescore
Show 54 more
  1. 2026-09-07 23:48 UTCEG score recompute
  2. 2026-09-07 23:48 UTCGHSA enrichment
  3. 2026-09-06 22:24 UTCEG score recompute
  4. 2026-09-06 22:24 UTCGHSA enrichment
  5. 2026-09-06 13:48 UTCEPSS rescore
  6. 2026-09-05 21:01 UTCEG score recompute
  7. 2026-09-05 21:01 UTCGHSA enrichment
  8. 2026-09-04 19:38 UTCEG score recompute
  9. 2026-09-04 19:38 UTCGHSA enrichment
  10. 2026-09-04 05:07 UTCEPSS rescore
  11. 2026-09-03 18:14 UTCGHSA enrichment
  12. 2026-09-02 16:50 UTCGHSA enrichment
  13. 2026-09-01 13:06 UTCGHSA enrichment
  14. 2026-08-31 10:55 UTCEG score recompute
  15. 2026-08-31 10:54 UTCGHSA enrichment
  16. 2026-08-30 19:18 UTCEPSS rescore
  17. 2026-08-30 19:17 UTCEPSS rescore
  18. 2026-08-30 08:57 UTCEG score recompute
  19. 2026-08-30 08:57 UTCGHSA enrichment
  20. 2026-08-30 01:22 UTCEPSS rescore
  21. 2026-08-29 07:31 UTCEG score recompute
  22. 2026-08-29 07:31 UTCGHSA enrichment
  23. 2026-08-28 21:42 UTCEPSS rescore
  24. 2026-08-28 06:05 UTCEG score recompute
  25. 2026-08-28 06:05 UTCGHSA enrichment
  26. 2026-08-27 14:25 UTCEPSS rescore
  27. 2026-08-27 04:41 UTCEG score recompute
  28. 2026-08-27 04:41 UTCGHSA enrichment
  29. 2026-08-26 14:47 UTCEPSS rescore
  30. 2026-08-26 03:18 UTCGHSA enrichment
  31. 2026-08-25 01:54 UTCEG score recompute
  32. 2026-08-25 01:54 UTCGHSA enrichment
  33. 2026-08-24 14:18 UTCEPSS rescore
  34. 2026-08-24 00:31 UTCEG score recompute
  35. 2026-08-24 00:31 UTCGHSA enrichment
  36. 2026-08-23 00:19 UTCEPSS rescore
  37. 2026-08-22 23:08 UTCEG score recompute
  38. 2026-08-22 23:08 UTCGHSA enrichment
  39. 2026-08-21 23:49 UTCEPSS rescore
  40. 2026-08-21 21:44 UTCEG score recompute
  41. 2026-08-21 21:44 UTCGHSA enrichment
  42. 2026-08-20 22:56 UTCEPSS rescore
  43. 2026-08-20 20:21 UTCGHSA enrichment
  44. 2026-08-19 20:48 UTCEG score recompute
  45. 2026-08-19 20:48 UTCGHSA enrichment
  46. 2026-08-19 17:04 UTCEPSS rescore
  47. 2026-08-18 19:25 UTCGHSA enrichment
  48. 2026-08-18 19:05 UTCEG score recompute
  49. 2026-08-18 19:05 UTCGHSA enrichment
  50. 2026-08-18 15:14 UTCEG score recompute▲ 5.40
  51. 2026-08-18 15:14 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  52. 2026-08-18 13:19 UTCNVD update
  53. 2026-08-18 12:42 UTCEG score recompute
  54. 2026-08-18 12:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74968?
CVE-2026-74968 is a medium vulnerability published on August 18, 2026. Site isolation issue in the Graphics: WebRender component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
When was CVE-2026-74968 disclosed?
CVE-2026-74968 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74968 actively exploited?
CVE-2026-74968 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 98.8% of all scored CVEs.
What is the CVSS score of CVE-2026-74968?
CVE-2026-74968 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-74968?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74968, 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

Explore the affected products and dependency analysis for CVE-2026-74968

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