---
id: "CVE-2026-126906"
page: "https://infrastack.ai/live/CVE-2026-126906"
kind: "vulnerability"
aliases: ["CVE-2026-126906"]
title: "Google Chrome on Mac: extensions race condition leaks sensitive information"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browser-users", "chrome", "macos", "other"]
not_affected_if: ["chrome-updated", "non-mac-platform"]
published_at: "2026-11-11T23:17:20+00:00"
first_seen_at: "2026-11-11T23:29:40+00:00"
updated_at: "2026-11-11T23:31:44+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126906", "first_seen_at": "2026-11-11T23:29:40+00:00"}]
exploit_sources: []
---

# Google Chrome on Mac: extensions race condition leaks sensitive information

Link for people: https://infrastack.ai/live/CVE-2026-126906 (this .md is for agents)

A race condition in Chrome's Extensions component on macOS lets a remote attacker who has already compromised the renderer process obtain sensitive information through crafted network traffic. The sources rate it High in Chromium's security scale.

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

## How to check

- Open Chrome and go to `chrome://settings/help` to read the installed version
- Confirm the version is `157.0.8103.78` or later

## Fix

- Google Chrome on Mac: move to `157.0.8103.78` or later

## Timeline

- 2026-11-11T23:29:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126906

## From the sources

Race condition in Extensions in Google Chrome on on Mac prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to obtain sensitive information via crafted network traffic. (Chromium security severity: High)

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_