---
id: "CVE-2026-113291"
kind: "vulnerability"
aliases: ["CVE-2026-113291"]
title: "Chrome: FullScreen memory flaw lets a crafted page run code in sandbox"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "google chrome", "fixed": ["156.0.8078.47"], "affected": "< 156.0.8078.47", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["chrome", "desktop-browsers", "managed-browsers", "other", "runtime"]
not_affected_if: ["already-patched"]
published_at: "2026-10-20T22:19:23+00:00"
first_seen_at: "2026-10-23T21:57:24+00:00"
updated_at: "2026-10-23T22:35:23+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113291", "first_seen_at": "2026-10-23T21:57:24+00:00"}]
---

# Chrome: FullScreen memory flaw lets a crafted page run code in sandbox

Google Chrome before 156.0.8078.47 has a memory corruption bug in its FullScreen code. A remote attacker who serves a crafted HTML page can potentially run arbitrary code inside the browser sandbox.

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

## Affected

- vendor:google chrome affected < 156.0.8078.47 fixed 156.0.8078.47

## How to check

Open chrome://version in Chrome and compare the version with 156.0.8078.47.
A lower version means the browser is affected.

## Fix

Update Google Chrome to 156.0.8078.47 or later.

## Timeline

- 2026-10-23T21:57:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113291

## From the sources

Memory corruption in FullScreen in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)

---

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