---
id: "CVE-2026-121076"
kind: "vulnerability"
aliases: ["CVE-2026-121076"]
title: "Chrome: WebXR use-after-free lets a crafted page run code outside the sandbox"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["browsers", "chrome", "desktop-users", "package"]
not_affected_if: ["already-updated", "non-chrome-browsers"]
published_at: "2026-11-03T21:17:12+00:00"
first_seen_at: "2026-11-03T21:19:11+00:00"
updated_at: "2026-11-03T21:26:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121076", "first_seen_at": "2026-11-03T21:19:11+00:00"}]
---

# Chrome: WebXR use-after-free lets a crafted page run code outside the sandbox

A memory-handling bug in WebXR in Google Chrome before 157.0.8103.38 lets a remote attacker run arbitrary code outside the browser sandbox. The attack needs a victim to visit a crafted HTML page, typically through social engineering.

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

## How to check

- Open Chrome and check the version under Settings > About Chrome, or run `chrome://version` in the address bar.
- Confirm the installed version is at least `157.0.8103.38`.

## Fix

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

## Timeline

- 2026-11-03T21:19:11+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121076

## From the sources

Use after free in WebXR 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_