---
id: "CVE-2026-113191"
kind: "vulnerability"
aliases: ["CVE-2026-113191"]
title: "Chrome on Mac: use-after-free lets a web page run code in sandbox"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "vendor"
products: [{"name": "google chrome", "fixed": ["156.0.8078.47"], "affected": "< 156.0.8078.47", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browser", "chrome", "macos", "runtime", "vendor"]
not_affected_if: ["chrome-already-updated", "non-mac-platforms"]
published_at: "2026-10-20T22:19:11+00:00"
first_seen_at: "2026-10-23T21:57:24+00:00"
updated_at: "2026-10-23T22:36:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113191", "first_seen_at": "2026-10-23T21:57:24+00:00"}]
---

# Chrome on Mac: use-after-free lets a web page run code in sandbox

A use-after-free bug in the Internals component of Google Chrome on macOS lets a remote attacker run arbitrary code inside the browser sandbox. The attack works through a crafted HTML page that a user opens.

_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

In Chrome, open chrome://settings/help and read the version; anything below 156.0.8078.47 is affected.

## Fix

Update Google Chrome on Mac to 156.0.8078.47 or later.

## Timeline

- 2026-10-23T21:57:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113191

## From the sources

Use after free in Internals in Google Chrome on on Mac prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside 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_