CVE-2026-43720

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — Patch released this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.5Exploit: 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 an unexpected Safari crash.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
30(Track)
EG Risk 30/100SSVC: 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
Severity65% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
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-2026-43720(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_62026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_42026-08-13redhat
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 22× in last 7d / 119× 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 170 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-43720?
CVE-2026-43720 is a medium 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 an unexpected…
When was CVE-2026-43720 disclosed?
CVE-2026-43720 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-2026-43720 actively exploited?
CVE-2026-43720 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 51.1% of all scored CVEs.
What is the CVSS score of CVE-2026-43720?
CVE-2026-43720 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43720?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43720, 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-2026-43720

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