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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (9.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Apple macOS
- Google Chrome — versions 145.0.7632.116
- Linux Kernel
- Microsoft Windows
References
- chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_23.html (Release Notes)
- issues.chromium.org/issues/485287859 (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.