CVE-2026-117953

HighCVSS 8.8/10Last modified Nov 5, 2026

Description

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Oct 27, 2026
Last modified
Nov 5, 2026
NVD status
Deferred

Related CVEs from 2026

CVE-2026-1179548.8Use-after-free in the Layout: Positioned component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, ThunCVE-2026-1179558.1JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159CVE-2026-1179568.8Invalid pointer in the Nimbus Desktop Client component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, andCVE-2026-1179578.1Cryptographic issue in the WebRTC: Networking component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, anCVE-2026-1179588.1Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, andCVE-2026-1179598.1Site isolation issue in the DOM: Service Workers component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159,CVE-2026-117965.1Asset Suite allows unauthenticated users to access PropertiesReloadServlet, CacheFlushServlet, MetadataCacheFlushServlet and ResourceBundleRCVE-2026-1179604.7Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and ThundCVE-2026-1179618.1Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, ThundCVE-2026-1179629.6Sandbox escape due to incorrect boundary conditions in the Storage: Quota Manager component. This vulnerability was fixed in Firefox 159, FiCVE-2026-1179638.1Incorrect boundary conditions in the DOM: Service Workers component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, ThunderCVE-2026-1179648.8Use-after-free in the Panning and Zooming component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Th
CVE-2026-117953: High severity, CVSS 8.8 | Vulnix