CVE-2026-100811 — Sandbox escape due to use-after-free in the DOM: Core & HTML component
Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4…
Published: 2026-09-29 · CVSS: 9.6 · CVSS 3.1
Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7