---
id: "CVE-2026-113078"
kind: "vulnerability"
aliases: ["CVE-2026-113078"]
title: "Chrome: crafted HTML page can run code outside the sandbox"
severity: "critical"
cvss: 9.6
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browsers", "chrome", "desktop", "runtime"]
not_affected_if: ["already-updated-chrome"]
published_at: "2026-10-20T22:18:59+00:00"
first_seen_at: "2026-10-23T21:57:23+00:00"
updated_at: "2026-10-23T22:37:36+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113078", "first_seen_at": "2026-10-23T21:57:23+00:00"}]
---

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

Google Chrome before 156.0.8078.47 has an input validation flaw in its compositing code. A remote attacker who gets a user to open a crafted HTML page could run arbitrary code outside the browser sandbox.

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

## How to check

Run chrome://version in Chrome and compare the version with 156.0.8078.47.

## Fix

Update Google Chrome to 156.0.8078.47 or later.

## Timeline

- 2026-10-23T21:57:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113078

## From the sources

Improper input validation in Compositing in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

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