---
id: CVE-2026-100800
title: Sandbox escape due to use-after-free in the Disability Access APIs component
summary: >-
  Sandbox escape due to use-after-free in the Disability Access APIs component.
  This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
severity: none
vendor: Mozilla
product: Firefox
affected:
  - Firefox
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T13:17:45.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100800'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=2056767'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2026-100/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2026-97/'
    label: security@mozilla.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T13:34:31.669Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.