CVE-2026-124864
CRITICAL
NVD
CVSS Score
9.6
Severity
CRITICAL
Published
Nov 10, 2026
Vendor
unknown
Description
Sandbox escape due to use-after-free in the DOM: Service Workers component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.