---
id: "CVE-2026-121061"
kind: "vulnerability"
aliases: ["CVE-2026-121061"]
title: "Chrome: use-after-free lets a crafted web page run code in sandbox"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browsers", "chrome", "desktop", "linux", "macos", "other", "windows"]
not_affected_if: ["chrome-up-to-date", "non-chromium-browser"]
published_at: "2026-11-03T21:17:10+00:00"
first_seen_at: "2026-11-03T21:19:10+00:00"
updated_at: "2026-11-03T21:27:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121061", "first_seen_at": "2026-11-03T21:19:10+00:00"}]
---

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

A use-after-free bug in the Modularization component of Google Chrome before 157.0.8103.38 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to open a crafted HTML page.

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

## How to check

- Open Chrome's version page (chrome://version) and compare the version to `157.0.8103.38`
- Check the installed version on managed machines with your device management tool; unknown otherwise

## Fix

- Google Chrome: move to `157.0.8103.38` or later

## Timeline

- 2026-11-03T21:19:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121061

## From the sources

Use after free in Modularization in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

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