What is CVE-2026-8021?

CVE-2026-8021 is a medium-severity vulnerability in Apple Macos, classified under Code Injection. CVSS score: 4.2/10. Published 2026-05-06.

How severe is CVE-2026-8021?

Medium severity. CVSS v3 base score is 4.2 out of 10.

RCE in Apple Macos

CVE-2026-8021

Script injection in UI in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who convinced a user to engage in specific UI gestures to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Apple Macos
Google Chrome — versions 148.0.7778.96
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-94 — Code Injection

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-8021?: CVE-2026-8021 is a medium-severity vulnerability in Apple Macos, classified under Code Injection. CVSS score: 4.2/10. Published 2026-05-06.
How severe is CVE-2026-8021?: Medium severity. CVSS v3 base score is 4.2 out of 10.