CVE-2026-43721

HIGHPre-NVD 6.57.5▲
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

This issue was addressed through improved state management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to silently hijack clipboard data.

CVSS v3
6.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

June 29, 2026

Last Modified

July 27, 2026

Advisory Details (3)

Auto-updated Jun 30, 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-2026-43721(10)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwebkitgtk-webdriver (2.52.6-0ubuntu0.26.04.1) @ resolute2026-09-18ubuntu
redhatwebkit2gtk3-0:2.52.5-1.el8_62026-08-25redhat
redhatwebkit2gtk3-0:2.52.5-1.el8_82026-08-25redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_22026-08-24redhat
redhatwebkitgtk4-0:2.52.5-1.el7_92026-08-24redhat
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 ... 2.53.91-1 (165 versions)——
wpewebkit2.38.6-1 ... 2.52.6-1 (54 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 ... 2.52.6-1 (20 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.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 17× 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.

Showing the most recent 100 of 285 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-43721?
CVE-2026-43721 is a high vulnerability published on June 29, 2026. This issue was addressed through improved state management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to silently hijack clipboard data.
When was CVE-2026-43721 disclosed?
CVE-2026-43721 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43721 actively exploited?
CVE-2026-43721 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 62.6% of all scored CVEs.
What is the CVSS score of CVE-2026-43721?
CVE-2026-43721 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.
How do I remediate CVE-2026-43721?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43721, 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-2026-43721

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