CVE-2023-25361

CRITICALNVD 8.89.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-03-02. NVD baseline CVSS 8.8; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.0%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A use-after-free vulnerability in WebCore::RenderLayer::setNextSibling in WebKitGTK before 2.36.8 allows attackers to execute code remotely.

CVSS v3
8.8
EG Score
9.8CRITICALmedium confidence
EG Risk
44
EG Risk 44/100CISA 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
Severity98% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.0%
EPSS %ILE
60th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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

March 2, 2023

Last Modified

March 7, 2025

Advisory Details (3)

Auto-updated Aug 11, 2026
⚠️ Active exploitation confirmed. Patch available.
generic

WebKitGTK+: Multiple Vulnerabilities (GLSA 202305-32) — Gentoo security

https://security.gentoo.org/glsa/202305-32
generic

244249 – (CVE-2023-25361) heap-use-after-free in WebCore::RenderLayer::setNextSibling()

https://bugs.webkit.org/show_bug.cgi?id=244249
generic🔴 Active Exploitation

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2023-0003

http://www.openwall.com/lists/oss-security/2023/04/21/3

Vendor Advisories for CVE-2023-25361(2)

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
redhatwebkit2gtk3-0:2.38.5-1.el82023-05-16redhat
redhatwebkit2gtk3-0:2.38.5-1.el92023-05-09redhat

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

(9 across 5 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.32.3-1 ... 2.38.0-1~deb10u1 (54 versions)
  • every version up to 2.38.0-1~deb11u1: fixed in 2.38.0-1~deb11u1
—
wpewebkit2.32.3-2 ... 2.36.7-1~deb11u1 (25 versions)
  • every version up to 2.38.0-1~deb11u1: fixed in 2.38.0-1~deb11u1
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
wpewebkit—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
wpewebkit—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
wpewebkit—
  • every version up to 2.38.0-1: fixed in 2.38.0-1
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.24.2-1 ... 2.37.91-1 (139 versions)
  • every version up to 2.38.0-1~deb10u1: fixed in 2.38.0-1~deb10u1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 28× 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 190 total refreshes for this CVE.

  1. 2026-10-09 20:05 UTCEPSS rescore
  2. 2026-10-08 17:05 UTCEPSS rescore
  3. 2026-10-07 23:45 UTCEPSS rescore
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  9. 2026-10-01 19:47 UTCEPSS rescore
  10. 2026-09-30 16:18 UTCEG score recompute
  11. 2026-09-30 15:01 UTCEPSS rescore
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  15. 2026-09-24 14:01 UTCEPSS rescore
  16. 2026-09-23 19:04 UTCOSV refresh
  17. 2026-09-23 13:45 UTCEPSS rescore
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  1. 2026-09-13 16:44 UTCEPSS rescore
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  5. 2026-09-07 15:59 UTCEPSS rescore
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  8. 2026-09-04 13:58 UTCEPSS rescore
  9. 2026-09-04 13:57 UTCEPSS rescore
  10. 2026-09-04 13:46 UTCOSV refresh
  11. 2026-09-04 05:04 UTCEPSS rescore
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  14. 2026-08-30 19:15 UTCEPSS rescore
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  22. 2026-08-21 23:46 UTCEPSS rescore
  23. 2026-08-20 22:53 UTCEPSS rescore
  24. 2026-08-19 17:01 UTCEPSS rescore
  25. 2026-08-18 13:46 UTCEPSS rescore
  26. 2026-08-18 01:29 UTCOSV refresh
  27. 2026-08-16 14:53 UTCEPSS rescore
  28. 2026-08-16 02:12 UTCEPSS rescore
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  31. 2026-08-13 21:58 UTCEPSS rescore
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  40. 2026-08-03 10:34 UTCEPSS rescore
  41. 2026-08-02 19:57 UTCOSV refresh
  42. 2026-08-02 02:24 UTCEPSS rescore
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  44. 2026-08-01 04:13 UTCEPSS rescore
  45. 2026-07-30 16:26 UTCEPSS rescore
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  48. 2026-07-28 15:34 UTCEPSS rescore
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  54. 2026-07-23 14:16 UTCEPSS rescore
  55. 2026-07-23 14:16 UTCEPSS rescore
  56. 2026-07-23 02:19 UTCEG score recompute
  57. 2026-07-22 23:07 UTCEG score recompute
  58. 2026-07-22 14:06 UTCEPSS rescore
  59. 2026-07-21 15:23 UTCEPSS rescore
  60. 2026-07-20 17:05 UTCEPSS rescore
  61. 2026-07-19 14:29 UTCEPSS rescore
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  63. 2026-07-19 02:27 UTCEPSS rescore
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  65. 2026-07-18 10:03 UTCEPSS rescore
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  67. 2026-07-16 17:01 UTCEPSS rescore
  68. 2026-07-16 17:01 UTCEPSS rescore
  69. 2026-07-16 04:23 UTCOSV refresh
  70. 2026-07-15 16:56 UTCEPSS rescore
  71. 2026-07-15 01:58 UTCEPSS rescore
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  73. 2026-07-13 22:28 UTCEPSS rescore
  74. 2026-07-13 22:28 UTCEPSS rescore
  75. 2026-07-13 06:11 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2023-25361?
CVE-2023-25361 is a critical vulnerability published on March 2, 2023. A use-after-free vulnerability in WebCore::RenderLayer::setNextSibling in WebKitGTK before 2.36.8 allows attackers to execute code remotely.
When was CVE-2023-25361 disclosed?
CVE-2023-25361 was first published on March 2, 2023, with the most recent update on March 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-25361 actively exploited?
CVE-2023-25361 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (60th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-25361?
CVE-2023-25361 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8 (CRITICAL).
How do I remediate CVE-2023-25361?
A fix for CVE-2023-25361 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-25361 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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