CVE-2026-109780

CriticalCVSS 9.8/10Last modified Oct 26, 2026

Description

Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-693

Affected software

No affected versions have been published.

Timeline

Published
Oct 13, 2026
Last modified
Oct 26, 2026
NVD status
Deferred

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