What is CVE-2023-32370?

CVE-2023-32370 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.3/10. Published 2023-09-06.

How severe is CVE-2023-32370?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Apple macOS

CVE-2023-32370

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.

Published 2023-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.001

Affected products

Apple macOS — versions unspecified
Webkitgtk
Wpewebkit Wpe Webkit

References

support.apple.com/en-us/HT213670 (Release Notes, Vendor Advisory)
www.openwall.com/lists/oss-security/2023/09/11/1 (Mailing List, Third Party Advisory)
security.gentoo.org/glsa/202401-04

Frequently asked questions

What is CVE-2023-32370?: CVE-2023-32370 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.3/10. Published 2023-09-06.
How severe is CVE-2023-32370?: Medium severity. CVSS v3 base score is 5.3 out of 10.