---
id: "CVE-2026-118335"
kind: "vulnerability"
aliases: ["CVE-2026-118335"]
title: "Chrome on Mac: crafted HTML page can run code inside sandbox"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "macos", "other"]
not_affected_if: ["chrome-156.0.8078.73-or-later"]
published_at: "2026-10-27T23:17:01+00:00"
first_seen_at: "2026-10-27T23:29:43+00:00"
updated_at: "2026-10-27T23:31:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118335", "first_seen_at": "2026-10-27T23:29:43+00:00"}]
---

# Chrome on Mac: crafted HTML page can run code inside sandbox

Improper input validation in Chrome's Metrics component on macOS lets a remote attacker run code inside the browser sandbox via a crafted HTML page. The sources say the Chromium security severity is High and do not describe a sandbox escape.

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

## How to check

- Run `chrome://version` in Chrome on Mac and compare the version with the fixed release, `156.0.8078.73`
- Check the installed app version with `/usr/libexec/PlistBuddy -c "Print :CFBundleShortVersionString" "/Applications/Google Chrome.app/Contents/Info.plist"`

## Fix

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

## Timeline

- 2026-10-27T23:29:43+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118335

## From the sources

Improper input validation in Metrics in Google Chrome on on Mac prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code inside 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_