What is CVE-2026-11656?

CVE-2026-11656 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.3/10. Published 2026-06-09.

How severe is CVE-2026-11656?

High severity. CVSS v3 base score is 8.3 out of 10.

Use After Free in Apple Macos

CVE-2026-11656

Use after free in ServiceWorker in Google Chrome prior to 149.0.7827.103 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security s…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Apple Macos
Google Chrome
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-11656?: CVE-2026-11656 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.3/10. Published 2026-06-09.
How severe is CVE-2026-11656?: High severity. CVSS v3 base score is 8.3 out of 10.