CVE-2026-92018

CriticalCVSS 9.6/10Last modified Oct 6, 2026

Description

Sandbox escape in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

Metrics

CVSS 3.1 9.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-693

Affected software

No affected versions have been published.

Timeline

Published
Sep 15, 2026
Last modified
Oct 6, 2026
NVD status
Analyzed

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CVE-2026-92018: Critical severity, CVSS 9.6 | Vulnix