---
id: "CVE-2026-118316"
kind: "vulnerability"
aliases: ["CVE-2026-118316"]
title: "Chrome V8: crafted HTML page can run code outside the sandbox"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browsers", "chrome", "desktop", "endpoints", "other"]
not_affected_if: ["already-updated", "no-chrome-installed"]
published_at: "2026-10-27T23:17:00+00:00"
first_seen_at: "2026-10-27T23:29:43+00:00"
updated_at: "2026-10-27T23:32:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118316", "first_seen_at": "2026-10-27T23:29:43+00:00"}]
---

# Chrome V8: crafted HTML page can run code outside the sandbox

Improper input validation in the V8 JavaScript engine in Google Chrome before 156.0.8078.73 lets a remote attacker run arbitrary code outside the browser sandbox. The attack is delivered through a crafted HTML page that a user visits.

_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 `google-chrome --version` on Linux
- Check managed fleets for Chrome builds older than `156.0.8078.73`

## Fix

- Update Google Chrome to `156.0.8078.73` or later
- Relaunch the browser after the update so the new version is running

## Timeline

- 2026-10-27T23:29:43+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118316

## From the sources

Improper input validation in V8 in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially 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_