---
id: "CVE-2026-118309"
kind: "vulnerability"
aliases: ["CVE-2026-118309"]
title: "Chrome on Android: input validation flaw lets crafted page escape sandbox"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["android", "browser", "chrome", "mobile", "runtime"]
not_affected_if: ["chrome-updated", "no-android-chrome"]
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-2026-118309", "first_seen_at": "2026-10-27T23:29:42+00:00"}]
---

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

Google Chrome on Android before 156.0.8078.73 mishandles input validation in its UI. A remote attacker can serve a crafted HTML page to potentially run 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 on the Android device, go to Settings > About Chrome, and read the version
- Check the installed version with `chrome://version` in the browser address bar

## Fix

- Update Google Chrome on Android to `156.0.8078.73` or later through the Play Store

## Timeline

- 2026-10-27T23:29:42+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118309

## From the sources

Improper input validation in UI in Google Chrome on on Android 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)

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