CVE-2026-43726

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
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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 process crash.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

Published

June 29, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Jun 29, 2026
Patch available.
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-2026-43726(11)

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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntuwebkitgtk-webdriver (2.52.6-0ubuntu0.26.04.1) @ resolute2026-09-23ubuntu
redhatwebkit2gtk3-0:2.52.5-1.el8_82026-08-25redhat
redhatwebkit2gtk3-0:2.52.5-1.el8_62026-08-25redhat
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_42026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_62026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el8_102026-07-20redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_82026-07-20redhat

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 rangeFix by version rangeDependents
webkit2gtk2.32.3-1 ... 2.53.4-1 (246 versions)
  • every version on: no fix on record
—
wpewebkit2.32.3-2 ... 2.52.5-1 (90 versions)
  • every version on: no fix on record
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.40.1-1 ... 2.54.0-1~exp1 (167 versions)
  • every version on: no fix on record
—
wpewebkit2.38.6-1 ... 2.54.0-2 (56 versions)
  • every version on: no fix on record
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.48.3-1 ... 2.52.4-1 (48 versions)
  • every version up to 2.52.5-1~deb13u1: fixed in 2.52.5-1~deb13u1
—
wpewebkit2.48.3-1 ... 2.54.0-2 (22 versions)
  • every version on: no fix on record
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.48.3-1 ... 2.52.5-1~deb13u1 (49 versions)
  • every version up to 2.52.5-1: fixed in 2.52.5-1
—
wpewebkit2.48.3-1 ... 2.52.4-1 (18 versions)
  • every version up to 2.52.5-1: fixed in 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 7× in last 7d / 34× 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 215 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-43726?
CVE-2026-43726 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-2026-43726 disclosed?
CVE-2026-43726 was first published 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-2026-43726 actively exploited?
CVE-2026-43726 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43726?
CVE-2026-43726 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-43726?
A fix for CVE-2026-43726 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-43726 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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