CVE-2023-40451

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2023-09-27. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in Safari 17. An attacker with JavaScript execution may be able to execute arbitrary code.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

September 27, 2023

Last Modified

November 21, 2024

References (9)

Vendor Advisories for CVE-2023-40451(1)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatwebkitgtk4-0:2.48.3-2.el7_92025-07-07redhat
redhatwebkit2gtk3-0:2.40.5-1.el82023-11-14redhat
redhatwebkit2gtk3-0:2.40.5-1.el92023-11-07redhat

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 ... 2.40.4-1 (96 versions)2.40.5-1~deb11u1—
wpewebkit2.32.3-2 ... 2.52.5-1 (90 versions)——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.40.1-1 ... 2.40.5-1~deb11u1 (12 versions)2.40.5-1~deb12u1—
wpewebkit2.38.6-1 ... 2.52.5-1 (53 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.40.5-1—
wpewebkit—2.40.5-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.40.5-1—
wpewebkit—2.40.5-1—

Additional Vendor Advisories

(2)

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 / 46× 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 136 total refreshes for this CVE.

  1. 2026-08-09 13:44 UTCEPSS rescore
  2. 2026-08-09 13:44 UTCEPSS rescore
  3. 2026-08-08 16:35 UTCEPSS rescore
  4. 2026-08-07 16:25 UTCEPSS rescore
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  10. 2026-08-02 02:25 UTCEPSS rescore
  11. 2026-08-02 02:25 UTCEPSS rescore
  12. 2026-08-02 01:36 UTCOSV refresh
  13. 2026-08-01 04:14 UTCEPSS rescore
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  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 02:25 UTCEG score recompute
  3. 2026-07-22 23:12 UTCEG score recompute
  4. 2026-07-22 14:06 UTCEPSS rescore
  5. 2026-07-21 15:23 UTCEPSS rescore
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  7. 2026-07-20 17:06 UTCEPSS rescore
  8. 2026-07-19 14:29 UTCEPSS rescore
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  14. 2026-07-15 16:56 UTCEPSS rescore
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  16. 2026-07-15 08:49 UTCOSV refresh
  17. 2026-07-15 01:58 UTCEPSS rescore
  18. 2026-07-13 22:28 UTCEPSS rescore
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  22. 2026-07-12 05:45 UTCEPSS rescore
  23. 2026-07-12 05:45 UTCEPSS rescore
  24. 2026-07-11 08:26 UTCEPSS rescore
  25. 2026-07-11 08:26 UTCEPSS rescore
  26. 2026-07-09 19:08 UTCEPSS rescore
  27. 2026-07-08 15:13 UTCEPSS rescore
  28. 2026-07-07 13:44 UTCEPSS rescore
  29. 2026-07-06 16:26 UTCEPSS rescore
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  31. 2026-07-06 02:22 UTCEPSS rescore
  32. 2026-07-05 02:29 UTCEPSS rescore
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  34. 2026-07-01 15:05 UTCEPSS rescore
  35. 2026-06-30 23:21 UTCEPSS rescore
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  37. 2026-06-28 14:06 UTCEPSS rescore
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  39. 2026-06-28 04:55 UTCEPSS rescore
  40. 2026-06-28 04:55 UTCEPSS rescore
  41. 2026-06-27 09:34 UTCOSV refresh
  42. 2026-06-27 03:07 UTCEPSS rescore
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  44. 2026-06-25 13:48 UTCEPSS rescore
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  46. 2026-06-24 14:04 UTCEPSS rescore
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  48. 2026-06-23 21:31 UTCEPSS rescore
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  50. 2026-06-22 14:24 UTCEPSS rescore
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  56. 2026-06-19 19:24 UTCEPSS rescore
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  58. 2026-06-18 17:51 UTCEPSS rescore
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  63. 2026-06-15 17:47 UTCEPSS rescore
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  65. 2026-06-14 23:16 UTCEPSS rescore
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  70. 2026-06-11 13:59 UTCEPSS rescore
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  72. 2026-06-10 22:17 UTCEPSS rescore
  73. 2026-06-10 13:21 UTCEPSS rescore
  74. 2026-06-10 13:21 UTCEPSS rescore
  75. 2026-06-09 19:47 UTCOSV refresh

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2023-40451?
CVE-2023-40451 is a high vulnerability published on September 27, 2023. This issue was addressed with improved iframe sandbox enforcement. This issue is fixed in Safari 17. An attacker with JavaScript execution may be able to execute arbitrary code.
When was CVE-2023-40451 disclosed?
CVE-2023-40451 was first published in the National Vulnerability Database on September 27, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-40451 actively exploited?
CVE-2023-40451 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 41.6% of all scored CVEs.
What is the CVSS score of CVE-2023-40451?
CVE-2023-40451 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-40451?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-40451, 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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