CVE-2026-28947

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-11. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 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, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
30.1%
KEV
Not listed

Published

May 11, 2026

Last Modified

July 15, 2026

Advisory Details (5)

Auto-updated May 12, 2026
No patch confirmed yet.
generic

About the security content of visionOS 26.5 - Apple Support

https://support.apple.com/en-us/127120
generic

About the security content of watchOS 26.5 - Apple Support

https://support.apple.com/en-us/127119
generic

About the security content of tvOS 26.5 - Apple Support

https://support.apple.com/en-us/127118
generic

About the security content of macOS Tahoe 26.5 - Apple Support

https://support.apple.com/en-us/127115
generic

About the security content of iOS 26.5 and iPadOS 26.5 - Apple Support

https://support.apple.com/en-us/127110

Vendor Advisories for CVE-2026-28947(10)

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

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatwebkit2gtk3-0:2.52.4-1.el9_62026-06-25redhat
redhatwebkit2gtk3-0:2.52.4-1.el9_42026-06-23redhat
redhatwebkit2gtk3-0:2.52.4-1.el9_22026-06-23redhat
redhatwebkit2gtk3-0:2.52.4-1.el8_62026-06-23redhat
redhatwebkit2gtk3-0:2.52.4-1.el8_82026-06-22redhat
redhatwebkit2gtk3-0:2.52.4-1.el8_42026-06-22redhat
redhatwebkitgtk4-0:2.52.4-1.el7_92026-06-22redhat
redhatwebkit2gtk3-0:2.52.4-1.el8_102026-06-15redhat
redhatwebkit2gtk3-0:2.52.4-1.el9_82026-06-15redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 54× 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 143 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-28947?
CVE-2026-28947 is a high vulnerability published on May 11, 2026. A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
When was CVE-2026-28947 disclosed?
CVE-2026-28947 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28947 actively exploited?
CVE-2026-28947 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-28947?
CVE-2026-28947 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-28947?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28947, 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.

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