---
id: "CVE-2026-113329"
kind: "vulnerability"
aliases: ["CVE-2026-113329"]
title: "Chrome on Mac: installer out-of-bounds read leaks sandbox memory"
severity: "medium"
cvss: 6.5
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", "desktop", "macos", "vendor"]
not_affected_if: ["chrome-updated"]
published_at: "2026-10-20T22:19:27+00:00"
first_seen_at: "2026-10-23T21:57:24+00:00"
updated_at: "2026-10-25T03:51:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113329", "first_seen_at": "2026-10-23T21:57:24+00:00"}]
---

# Chrome on Mac: installer out-of-bounds read leaks sandbox memory

A out-of-bounds read in the Installer component of Google Chrome on macOS lets a remote attacker read memory inside the sandbox when the victim opens a crafted HTML page. The sources say the flaw is in the browser, rated Chromium security severity Medium, with a CVSS score of 6.5.

_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

- Run `chrome --version` or check Chrome's About page and compare against `156.0.8078.47`
- unknown

## Fix

- Update Google Chrome on macOS to `156.0.8078.47` or later
- unknown

## Timeline

- 2026-10-23T21:57:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113329

## From the sources

Out of bounds read in Installer in Google Chrome on on Mac prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

---

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