CVE-2026-100800

CriticalCVSS 9.6/10Last modified Oct 19, 2026

Description

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

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-416

Affected software

No affected versions have been published.

Timeline

Published
Sep 29, 2026
Last modified
Oct 19, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-1008018.8Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, CVE-2026-1008024.3Uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.CVE-2026-1008038.1Same-origin policy bypass in the WebExtensions component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 14CVE-2026-1008049.6Sandbox escape due to use-after-free in the Preferences: Backend component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.CVE-2026-1008057.5Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.CVE-2026-1008064.3Uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.CVE-2026-1008078.8Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird CVE-2026-1008088.8Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153CVE-2026-1008098.1Same-origin policy bypass in the DevTools component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, CVE-2026-100818.8The Unlimited Elements For Elementor WordPress plugin before 2.0.11 does not sanitize or escape Google review content fetched from the Serp CVE-2026-1008109.8Other issue in the DevTools component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.CVE-2026-1008119.6Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157,
CVE-2026-100800: Critical severity, CVSS 9.6 | Vulnix