---
id: "CVE-2026-121185"
kind: "vulnerability"
aliases: ["CVE-2026-121185"]
title: "Chrome: use-after-free in Picture-in-Picture lets crafted web page run code"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "endpoints", "runtime"]
not_affected_if: ["chrome-updated"]
published_at: "2026-11-03T21:17:27+00:00"
first_seen_at: "2026-11-03T21:19:25+00:00"
updated_at: "2026-11-03T21:23:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121185", "first_seen_at": "2026-11-03T21:19:25+00:00"}]
---

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

Google Chrome versions before 157.0.8103.38 have a use-after-free bug in the Picture-in-Picture feature. A remote attacker who tricks a user into opening a crafted HTML page can execute arbitrary code outside the browser sandbox.

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

## How to check

- Open Chrome and check the version under Chrome menu > Help > About Google Chrome, or run `chrome --version` on the machine
- Compare the installed version against `157.0.8103.38`

## Fix

- Google Chrome: move to `157.0.8103.38` or later

## Timeline

- 2026-11-03T21:19:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121185

## From the sources

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

---

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