CVE-2026-65340

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — Patch released this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100CISA SSVC

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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 14, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
Patch available.
generic

About the security content of iOS 18.7.10 and iPadOS 18.7.10 - Apple Support

https://support.apple.com/en-us/148287
generic

About the security content of iOS 26.6.1 and iPadOS 26.6.1 - Apple Support

https://support.apple.com/en-us/148282
generic

About the security content of macOS Tahoe 26.6.2 - Apple Support

https://support.apple.com/en-us/148281

Vendor Advisories for CVE-2026-65340(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatwebkit2gtk3-0:2.54.0-1.el8_102026-09-30redhat
redhatwebkit2gtk3-0:2.54.0-1.el9_82026-09-21redhat

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

(6 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.40.1-1 ... 2.54.0-1~exp1 (168 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 ... 2.53.92-1 (59 versions)
  • every version up to 2.54.0-1~deb13u1: fixed in 2.54.0-1~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 ... 2.54.0-1~exp1 (61 versions)
  • every version on: no fix on record
—
wpewebkit2.48.3-1 ... 2.52.6-1 (20 versions)
  • every version up to 2.54.0-1: fixed in 2.54.0-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 78× 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 134 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-65340?
CVE-2026-65340 is a medium vulnerability published on August 17, 2026. This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.
When was CVE-2026-65340 disclosed?
CVE-2026-65340 was first published on August 17, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65340 actively exploited?
CVE-2026-65340 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-65340?
CVE-2026-65340 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-65340?
A fix for CVE-2026-65340 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-65340 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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