---
id: "CVE-2026-121070"
kind: "vulnerability"
aliases: ["CVE-2026-121070"]
title: "Chrome: use-after-free in WTF lets a crafted web page run code"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "package"]
not_affected_if: ["auto-updated-browsers", "chrome-158-or-later"]
published_at: "2026-11-03T21:17:11+00:00"
first_seen_at: "2026-11-03T21:19:11+00:00"
updated_at: "2026-11-03T21:26:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121070", "first_seen_at": "2026-11-03T21:19:11+00:00"}]
---

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

A use-after-free bug in the WTF library of Google Chrome lets a remote attacker run code inside the browser sandbox when a victim opens a crafted HTML page. The sources say the attack needs only a crafted page, and the chromium severity rating is Medium.

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

## How to check

- Check the Chrome version in Chrome's About page or with `google-chrome --version`.
- Compare the installed version against `157.0.8103.38`.

## Fix

- Google Chrome: move to `157.0.8103.38` or later.

## Timeline

- 2026-11-03T21:19:11+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121070

## From the sources

Use after free in WTF 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)

---

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