---
id: "CVE-2026-126885"
page: "https://infrastack.ai/live/CVE-2026-126885"
kind: "vulnerability"
aliases: ["CVE-2026-126885"]
title: "Chrome: use-after-free in ServiceWorker lets a crafted page run code"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "runtime"]
not_affected_if: ["chrome-updated"]
published_at: "2026-11-11T23:17:17+00:00"
first_seen_at: "2026-11-11T23:29:38+00:00"
updated_at: "2026-11-11T23:32:05+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126885", "first_seen_at": "2026-11-11T23:29:38+00:00"}]
exploit_sources: []
---

# Chrome: use-after-free in ServiceWorker lets a crafted page run code

Link for people: https://infrastack.ai/live/CVE-2026-126885 (this .md is for agents)

A use-after-free bug in the ServiceWorker component of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code outside the browser sandbox. The attacker only needs to get the victim to load a crafted HTML page.

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

## How to check

- Open Chrome and go to `chrome://settings/help` to see the installed version.
- Check that the version is at least `157.0.8103.78`.

## Fix

- Google Chrome: move to `157.0.8103.78` or later.

## Timeline

- 2026-11-11T23:29:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126885

## From the sources

Use after free in ServiceWorker in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

---

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