What is CVE-2026-3063?

CVE-2026-3063 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.4/10. Published 2026-02-23.

How severe is CVE-2026-3063?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Apple macOS

CVE-2026-3063

Inappropriate implementation in DevTools in Google Chrome prior to 145.0.7632.116 allowed an attacker who convinced a user to install a malicious extension to inject scripts or HTML into a privileged page via DevTools. (Chromium security severity: High)

EPSS: 0.002 (8.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Apple Macos
Google Chrome — versions 145.0.7632.116
Linux Linux_kernel
Microsoft Windows

References

chrome-cve-admin@google.com (Release Notes)
chrome-cve-admin@google.com (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-3063?: CVE-2026-3063 is a medium-severity vulnerability in Apple macOS. CVSS score: 5.4/10. Published 2026-02-23.
How severe is CVE-2026-3063?: Medium severity. CVSS v3 base score is 5.4 out of 10.