The issue was addressed with improved checks.

published 2023-07-27 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-42399

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

The issue was addressed with improved checks. This issue is fixed in iOS 16.6 and iPadOS 16.6, tvOS 16.6, macOS Ventura 13.5, Safari 16.6, watchOS 9.6. Processing web content may lead to arbitrary code execution.

Patch / fix

fixed in 5 distros 5

Apple Safari 16.6
Apple tvOS 16.6
Apple iOS and iPadOS 16.6
Apple macOS 13.5
Apple watchOS 9.6

debian ubuntu red hat suse almalinux

wpewebkit Debian 14, Debian 13 2.40.5-1
webkit2gtk Debian 12 2.40.5-1~deb12u1
webkit2gtk Debian 14, Debian 13 2.40.5-1

debian advisories DEBIAN-CVE-2023-38600

webkit2gtk Ubuntu 22.04 LTS 2.40.5-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2023-38600

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

webkit2gtk3 RHEL 8 2.40.5-1.el8
webkit2gtk3-jsc RHEL 8 2.40.5-1.el8
webkit2gtk3 RHEL 9 2.40.5-1.el9
webkit2gtk3-jsc RHEL 9 2.40.5-1.el9
webkitgtk4 RHEL 7 ELS 2.48.3-2.el7_9
webkitgtk4-jsc RHEL 7 ELS 2.48.3-2.el7_9

red hat advisories RHSA-2025:10364 RHSA-2023:7055 RHSA-2023:6535

webkit2gtk3 SLE Module for Desktop Applications 15 SP5, SLE Module for Desktop Applications 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.51.1
webkit2gtk4 SLE Module for Development Tools 15 SP5, SLE Module for Development Tools 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.51.1
webkit2gtk3-soup2 SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.51.1
webkit2gtk3 SLE Module for Desktop Applications 15 SP5, SLE Module for Desktop Applications 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.45.3
webkit2gtk4 SLE Module for Development Tools 15 SP5, SLE Module for Development Tools 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.45.3
webkit2gtk3-soup2 SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.5 +1 more 2.40.5-150400.4.45.3
webkit2gtk3 SLES for SAP 12 SP5, SLES 12 SP5, SLES 12 SP2-BCL +2 more 2.40.5-2.146.1
webkit2gtk3 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +7 more 2.40.5-150200.78.1

suse advisories SUSE-SU-2023:3753-1 SUSE-SU-2023:3419-1 SUSE-SU-2023:3300-1 SUSE-SU-2023:3237-1 SUSE-SU-2023:3233-1

webkit2gtk3 AlmaLinux 8 2.40.5-1.el8
webkit2gtk3-jsc AlmaLinux 8 2.40.5-1.el8
webkit2gtk3 AlmaLinux 9 2.40.5-1.el9
webkit2gtk3-jsc AlmaLinux 9 2.40.5-1.el9

almalinux advisories ALSA-2023:7055 ALSA-2023:6535

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-38600 updated 2026-11-07 cvss 8.8

webkitgtk: arbitrary code execution

Red Hat Enterprise Linux 6 webkitgtk
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
affected: no fix available
Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.40.5-1.el8, webkit2gtk3-jsc 2.40.5-1.el8
fixed: vendor fix RHSA-2023:7055
Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.40.5-1.el9, webkit2gtk3-jsc 2.40.5-1.el9
fixed: vendor fix RHSA-2023:6535
Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.48.3-2.el7_9, webkitgtk4-jsc 2.48.3-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.48.3-2.el7_9, webkitgtk4-devel 2.48.3-2.el7_9, webkitgtk4-debuginfo 2.48.3-2.el7_9, webkitgtk4-jsc-devel 2.48.3-2.el7_9
fixed: vendor fix RHSA-2025:10364

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-23)

Exploit prediction

1.43% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Apple Safari
Apple tvOS
Apple iOS and iPadOS
Apple macOS
Apple watchOS

References

support.apple.com /en-us/HT213847
vendor-advisory
support.apple.com /en-us/HT213846
vendor-advisory
support.apple.com /en-us/HT213841
vendor-advisory
support.apple.com /en-us/HT213843
vendor-advisory
support.apple.com /en-us/HT213848
vendor-advisory
openwall.com /lists/oss-security/2023/08/02/1
third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/KJ4DG5LHWG2INDOTPB7MO4JVJN6LKL3M/
debian.org /security/2023/dsa-5468
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/KQXJYKTGLKI6TJEFJCKPHCNY7PS72OER/
security.gentoo.org /glsa/202401-04

Sources

CVE List CVE-2023-38600
NVD CVE-2023-38600

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary