---
id: "CVE-2026-126872"
page: "https://infrastack.ai/live/CVE-2026-126872"
kind: "vulnerability"
aliases: ["CVE-2026-126872"]
title: "Chrome: FileSystem authorization flaw lets crafted web page run code"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browsers", "chrome", "endpoints", "other"]
not_affected_if: ["chrome-157-or-later"]
published_at: "2026-11-11T23:17:15+00:00"
first_seen_at: "2026-11-11T23:29:37+00:00"
updated_at: "2026-11-11T23:32:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126872", "first_seen_at": "2026-11-11T23:29:37+00:00"}]
exploit_sources: []
---

# Chrome: FileSystem authorization flaw lets crafted web page run code

Link for people: https://infrastack.ai/live/CVE-2026-126872 (this .md is for agents)

Google Chrome before 157.0.8103.78 has an incorrect authorization check in its FileSystem component. A remote attacker who tricks a user into opening a crafted HTML page can execute arbitrary code outside the browser sandbox.

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

## How to check

- Check the Chrome version in Chrome's About page (Settings > About Chrome) and compare it with `157.0.8103.78`.
- Chrome is affected if the version is below `157.0.8103.78`.

## Fix

- Google Chrome: move to `157.0.8103.78` or later.

## Timeline

- 2026-11-11T23:29:37+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126872

## From the sources

Incorrect authorization in FileSystem in Google Chrome prior to 157.0.8103.78 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (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_