---
id: "CVE-2026-124944"
page: "https://infrastack.ai/live/CVE-2026-124944"
kind: "vulnerability"
aliases: ["CVE-2026-124944"]
title: "Firefox: Marionette component leaks information to attackers"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browser-automation", "firefox", "other"]
not_affected_if: ["firefox-160-or-later"]
published_at: "2026-11-10T14:17:28+00:00"
first_seen_at: "2026-11-10T14:22:19+00:00"
updated_at: "2026-11-10T14:24:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124944", "first_seen_at": "2026-11-10T14:22:19+00:00"}]
exploit_sources: []
---

# Firefox: Marionette component leaks information to attackers

Link for people: https://infrastack.ai/live/CVE-2026-124944 (this .md is for agents)

Firefox's Marionette component, the remote-control interface used for browser automation, can disclose information. The sources do not say what information or what an attacker must do to reach it.

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

## How to check

- Check the Firefox version with `firefox --version`; versions before 160 are affected by this report.
- Check whether Marionette is enabled, for example with the `marionette.enabled` preference in about:config.

## Fix

- Firefox: move to `160` or later.

## Timeline

- 2026-11-10T14:22:19+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124944

## From the sources

Information disclosure in the Marionette component. This vulnerability was fixed in Firefox 160.

---

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