---
id: "CVE-2026-118310"
kind: "vulnerability"
aliases: ["CVE-2026-118310"]
title: "Chrome on Windows: input validation flaw lets crafted page escape sandbox"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browsers", "chrome", "runtime", "windows"]
not_affected_if: ["already-on-156.0.8078.73-or-later"]
published_at: "2026-10-27T23:16:59+00:00"
first_seen_at: "2026-10-27T23:29:42+00:00"
updated_at: "2026-10-27T23:32:10+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118310", "first_seen_at": "2026-10-27T23:29:42+00:00"}]
---

# Chrome on Windows: input validation flaw lets crafted page escape sandbox

Improper input validation in the Views component of Google Chrome on Windows lets a remote attacker run arbitrary code outside the browser sandbox via a crafted HTML page. Chromium rates the flaw High severity.

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

## How to check

- Check the installed Chrome version at chrome://settings/help or with `chrome --version`
- Confirm the machine runs Windows, since the flaw is listed for Windows builds

## Fix

- Update Google Chrome on Windows to `156.0.8078.73` or later
- Restart the browser after the update so the new build is running

## Timeline

- 2026-10-27T23:29:42+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118310

## From the sources

Improper input validation in Views in Google Chrome on on Windows 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_