---
id: "CVE-2026-124905"
page: "https://infrastack.ai/live/CVE-2026-124905"
kind: "vulnerability"
aliases: ["CVE-2026-124905"]
title: "Firefox: DOM Navigation sandbox escape fixed in Firefox 160"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "desktop", "firefox", "runtime"]
not_affected_if: ["patched-version"]
published_at: "2026-11-10T14:17:24+00:00"
first_seen_at: "2026-11-10T14:22:17+00:00"
updated_at: "2026-11-10T14:24:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124905", "first_seen_at": "2026-11-10T14:22:17+00:00"}]
exploit_sources: []
---

# Firefox: DOM Navigation sandbox escape fixed in Firefox 160

Link for people: https://infrastack.ai/live/CVE-2026-124905 (this .md is for agents)

A flaw in the DOM Navigation component of Firefox lets web content escape the browser's sandbox. A successful attack could let a malicious web page reach beyond the sandboxed content process.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Firefox version in the browser's About menu or with `firefox --version`
- Compare it against the fixed versions: `160`, `115.45`, `153.7`

## Fix

- Firefox: `160`
- Firefox ESR 115: `115.45`
- Firefox ESR 153: `153.7`

## Timeline

- 2026-11-10T14:22:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124905

## From the sources

Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, and Firefox ESR 153.7.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_