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TI-2023-20826 Aliases CVE-2023-39928GHSA-7245-jcxv-7q52

Use after free in Webkit

Priority MEDIUM 41CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 4 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

A use-after-free vulnerability exists in the MediaRecorder API of Webkit WebKitGTK 2.40.5. A specially crafted web page can abuse this vulnerability to cause memory corruption and potentially arbitrary code execution. A user would need to to visit a malicious webpage to trigger this vulnerability.

Why it matters now

EPSS 0.01446 73rd percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 4 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
WebKitWebkitWebKitGTK 2.40.5—No fix listedCNA
  • Webkit VendorWebKit Affected WebKitGTK 2.40.5 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:webkitgtk:webkitgtk:2.40.5:*:*:*:*:*:*:*2.40.5VulnerableWebKitGTK
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*12.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
  • cpe:2.3:a:webkitgtk:webkitgtk:2.40.5:*:*:*:*:*:*:* Versions 2.40.5 Vulnerable ·WebKitGTK
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject

Remediation

Red Hat 3 advisories

  • RHSA-2025:10364 Released 2025-07-07 · Red Hat rating Important
    webkitgtk4 security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.48.3-2.el7_9, webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-jsc-2.48.3-2.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-doc-2.48.3-2.el7_9, webkitgtk4-jsc-devel-2.48.3-2.el7_9
  • RHSA-2024:2982 Released 2024-05-22 · Red Hat rating Important
    webkit2gtk3 security update
    • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.42.5-1.el8, webkit2gtk3-devel-2.42.5-1.el8, webkit2gtk3-jsc-2.42.5-1.el8 +1
  • RHSA-2024:2126 Released 2024-04-30 · Red Hat rating Important
    webkit2gtk3 security update
    • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.42.5-1.el9, webkit2gtk3-devel-2.42.5-1.el9, webkit2gtk3-jsc-2.42.5-1.el9 +1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:2982
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:2126
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2025:10364
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2025:10364

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-39928
  2. 2026-10-03 Alias added: GHSA-7245-jcxv-7q52

References

Advisory 4

Other 1

  • TI-2020-08024 Use after free in Apple Safari CVSS 3.1HIGH 8.8
  • TI-2018-08811 WebCore/platform/graphics/texmap/TextureMapperLayer.cpp in WebKit, as used in WebKitGTK+… CVSS 3.0HIGH 8.8
  • TI-2018-03164 In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3… CVSS 3.0HIGH 8.8
  • TI-2026-57696 Webkitgtk: validate the full featurelist array once in opentypeverticaldata findfeature CVSS 3.1HIGH 8.8
  • TI-2020-08021 Type confusion in Apple Safari CVSS 3.1HIGH 8.8
  • TI-2026-54507 Webkitgtk: use-after-free of jscvalue function parameters CVSS 3.1HIGH 8.8
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences