Firefox vulnerability

Undefined behavior in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Published 24 Feb 2026Updated 21 Sep 202634 sources
CVSS 9.8

Source timeline

CVE record published by NVDView source ↗