CVE-2026-100778

CRITICAL9.6

Published 2026-09-29 · Updated 2026-09-29 · Source security@mozilla.org

Description

Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWE-416

References

View on NVD

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