CVE-2026-43731

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — Patch released this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to memory corruption.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

June 29, 2026

Last Modified

August 17, 2026

Advisory Details (3)

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

About the security content of Safari 26.5.2 - Apple Support

https://support.apple.com/en-us/127685
generic

About the security content of macOS Tahoe 26.5.2 - Apple Support

https://support.apple.com/en-us/127595
generic

About the security content of iOS 26.5.2 and iPadOS 26.5.2 - Apple Support

https://support.apple.com/en-us/127594

Vendor Advisories for CVE-2026-43731(8)

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

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatwebkitgtk4-0:2.52.5-1.el7_92026-08-24redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_22026-08-24redhat
redhatwebkit2gtk3-0:2.52.5-1.el8_42026-08-20redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_42026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_62026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_82026-07-20redhat
redhatwebkit2gtk3-0:2.52.5-1.el8_102026-07-20redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.32.3-1 ... 2.53.4-1 (246 versions)——
wpewebkit2.32.3-2 ... 2.52.5-1 (90 versions)——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.40.1-1 ... 2.53.4-1 (161 versions)——
wpewebkit2.38.6-1 ... 2.52.5-1 (53 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.48.3-1 ... 2.52.4-1 (48 versions)2.52.5-1~deb13u1—
wpewebkit2.48.3-1 ... 2.52.5-1 (19 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.48.3-1 ... 2.52.5-1~deb13u1 (49 versions)2.52.5-1—
wpewebkit2.48.3-1 ... 2.52.4-1 (18 versions)2.52.5-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 33× in last 7d / 163× 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 227 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-43731?
CVE-2026-43731 is a high vulnerability published on June 29, 2026. A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to memory…
When was CVE-2026-43731 disclosed?
CVE-2026-43731 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43731 actively exploited?
CVE-2026-43731 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 66.6% of all scored CVEs.
What is the CVSS score of CVE-2026-43731?
CVE-2026-43731 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43731?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43731, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-43731

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