---
id: "CVE-2026-124897"
page: "https://infrastack.ai/live/CVE-2026-124897"
kind: "vulnerability"
aliases: ["CVE-2026-124897"]
title: "Firefox: JavaScript garbage collector use-after-free flaw fixed in 160"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "firefox", "runtime"]
not_affected_if: []
published_at: "2026-11-10T14:17:23+00:00"
first_seen_at: "2026-11-10T14:22:16+00:00"
updated_at: "2026-11-10T14:24:56+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124897", "first_seen_at": "2026-11-10T14:22:16+00:00"}]
exploit_sources: []
---

# Firefox: JavaScript garbage collector use-after-free flaw fixed in 160

Link for people: https://infrastack.ai/live/CVE-2026-124897 (this .md is for agents)

A use-after-free bug in the JavaScript garbage collector of Firefox can corrupt memory when the browser runs crafted script. The sources do not say what an attacker can achieve beyond that.

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

## How to check

- Check the Firefox version in Help > About Firefox; the sources name Firefox 160 and Firefox ESR 153.7 as the fixed releases.

## Fix

- Firefox: `160`
- Firefox ESR: `153.7`

## Timeline

- 2026-11-10T14:22:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124897

## From the sources

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 160 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_