CVE-2026-28953

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-11. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, 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 process crash.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

May 11, 2026

Last Modified

July 15, 2026

Advisory Details (7)

Auto-updated May 13, 2026
No patch confirmed yet.
generic

About the security content of Safari 26.5 - Apple Support

https://support.apple.com/en-us/127121
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 18.7.9 and iPadOS 18.7.9 - Apple Support

https://support.apple.com/en-us/127111
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-2026-28953(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.el8_62026-06-23redhat
redhatwebkit2gtk3-0:2.52.4-1.el9_22026-06-23redhat
redhatwebkit2gtk3-0:2.52.4-1.el9_42026-06-23redhat
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.el9_82026-06-15redhat
redhatwebkit2gtk3-0:2.52.4-1.el8_102026-06-15redhat

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.

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 ... 2.52.3-2~deb13u1 (47 versions)2.52.4-1—
wpewebkit2.48.3-1 ... 2.52.3-1 (17 versions)2.52.4-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 5× 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 264 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-28953?
CVE-2026-28953 is a high vulnerability published on May 11, 2026. The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, 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 process crash.
When was CVE-2026-28953 disclosed?
CVE-2026-28953 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-2026-28953 actively exploited?
CVE-2026-28953 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 65.5% of all scored CVEs.
What is the CVSS score of CVE-2026-28953?
CVE-2026-28953 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-28953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28953, 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-2026-28953

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