CVE-2023-32370: A logic issue was addressed with improved validation

Q: How do I fix CVE-2023-32370?

macos: upgrade to 13.3; webkitgtk: upgrade to 2.40.1; wpe webkit: upgrade to 2.40.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-32370 being exploited?

CVE-2023-32370 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-32370 affect?

CVE-2023-32370 affects macos, webkitgtk, wpe webkit. Severity is medium (CVSS 5.3). A logic issue was addressed with improved validation. This issue is fixed in macOS Ventura 13.3. Content Security Policy to block domains with wildcards may fail.

Q: How urgent is CVE-2023-32370?

Priority 38/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADEUPGRADEUPGRADE

CVE-2023-32370 is a medium-severity flaw (CVSS 5.3) affecting macos, webkitgtk, wpe webkit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A logic issue was addressed with improved validation. This issue is fixed in macOS Ventura 13.3. Content Security Policy to block domains with wildcards may fail.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Published	2023-09-06
Last modified	2026-06-17

Publisher (CNA): Apple Inc. · Vendor: apple · webkitgtk · wpewebkit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-06 02:15 UTCPublished CVE record published
2026-06-17 05:58 UTCUpdated Record last modified

apple macos UPGRADE

Affected: >= 13.0 and < 13.3

Fixed in: 13.3

Safe to downgrade to: a release before 13.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

webkitgtk webkitgtk UPGRADE

Affected: < 2.40.1

Fixed in: 2.40.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webkitgtk || rpm -q webkitgtk || webkitgtk --version

2. UPGRADE to 2.40.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webkitgtk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webkitgtk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

wpewebkit wpe webkit UPGRADE

Affected: < 2.40.1

Fixed in: 2.40.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wpe-webkit || rpm -q wpe-webkit || wpe-webkit --version

2. UPGRADE to 2.40.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wpe-webkit

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wpe-webkit

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-32370?

macos: upgrade to 13.3; webkitgtk: upgrade to 2.40.1; wpe webkit: upgrade to 2.40.1. Exact commands for each OS are on this page.

Is CVE-2023-32370 being exploited?

CVE-2023-32370 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-32370 affect?

CVE-2023-32370 affects macos, webkitgtk, wpe webkit. Severity is medium (CVSS 5.3). A logic issue was addressed with improved validation. This issue is fixed in macOS Ventura 13.3. Content Security Policy to block domains with wildcards may fail.

How urgent is CVE-2023-32370?

Priority 38/100. Remotely exploitable, no login, no user action

Software pages

macOS vulnerabilities · WebKit vulnerabilities · Apple Safari and WebKit vulnerabilities

Related CVEs

CVE-2026-28854 HIGH 7.5 UPGRADE The issue was addressed with additional app bundle integrity checks
CVE-2026-86915 MEDIUM 4.7 UPGRADE A race condition was addressed with improved locking
CVE-2026-86928 MEDIUM 5.5 UPGRADE A path handling issue was addressed with improved validation
CVE-2026-86932 MEDIUM 5.5 UPGRADE An authorization issue was addressed with improved state management
CVE-2026-86933 LOW 3.3 UPGRADE A permissions issue was addressed with additional sandbox restrictions

References

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