---
id: "CVE-2026-121238"
kind: "vulnerability"
aliases: ["CVE-2026-121238"]
title: "Chrome: use-after-free lets a crafted web page run code"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["chrome", "desktop-browsers", "other"]
not_affected_if: ["chrome-updated"]
published_at: "2026-11-03T21:17:34+00:00"
first_seen_at: "2026-11-03T21:19:28+00:00"
updated_at: "2026-11-03T21:21:12+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121238", "first_seen_at": "2026-11-03T21:19:28+00:00"}]
---

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

A memory-handling bug in Google Chrome before 157.0.8103.38 lets a remote attacker run arbitrary code inside the browser sandbox when a victim opens a crafted HTML page. Chromium rates the flaw Medium severity.

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

## How to check

- Check the installed Chrome version in the browser's About page or with `google-chrome --version` on Linux
- Compare the result against `157.0.8103.38`

## Fix

- Google Chrome: `157.0.8103.38` or later

## Timeline

- 2026-11-03T21:19:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121238

## From the sources

Use after free in Source 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: Medium)

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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_