---
id: "CVE-2026-118002"
kind: "vulnerability"
aliases: ["CVE-2026-118002"]
title: "Firefox: race condition in Networking component leaks information"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["desktop-browsers", "firefox", "other"]
not_affected_if: []
published_at: "2026-10-27T14:16:57+00:00"
first_seen_at: "2026-10-27T14:32:25+00:00"
updated_at: "2026-10-27T14:33:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118002", "first_seen_at": "2026-10-27T14:32:25+00:00"}]
---

# Firefox: race condition in Networking component leaks information

A race condition in the Firefox Networking component can expose information to an attacker. The fix is in Firefox 159 and Firefox ESR 153.6.

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

## How to check

- Check the installed Firefox version with `firefox --version` or Help > About Firefox; the sources do not give the affected range beyond the fixed releases.

## Fix

- Update Firefox to `159` or later, or Firefox ESR to `153.6` or later.

## Timeline

- 2026-10-27T14:32:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118002

## From the sources

Information disclosure due to race condition in the Networking component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_