---
id: "CVE-2026-118306"
kind: "vulnerability"
aliases: ["CVE-2026-118306"]
title: "Google Chrome: memory corruption in FileSystem lets a web page run code"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browsers", "chrome", "desktop", "linux", "macos", "runtime", "windows"]
not_affected_if: ["patched-version"]
published_at: "2026-10-27T23:16:59+00:00"
first_seen_at: "2026-10-27T23:29:42+00:00"
updated_at: "2026-10-27T23:32:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118306", "first_seen_at": "2026-10-27T23:29:42+00:00"}]
---

# Google Chrome: memory corruption in FileSystem lets a web page run code

A memory corruption flaw in the FileSystem component of Google Chrome before 156.0.8078.73 can be triggered by a crafted HTML page. An attacker who lures a user to that page could execute 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 and check the version under Settings > About Chrome, or run `google-chrome --version` on Linux
- Confirm the installed version is below `156.0.8078.73`

## Fix

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

## Timeline

- 2026-10-27T23:29:42+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118306

## From the sources

Memory corruption in FileSystem 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: Critical)

---

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