---
id: "CVE-2026-121101"
kind: "vulnerability"
aliases: ["CVE-2026-121101"]
title: "Chrome: DevTools flaw lets a crafted extension reach privileged pages"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["browser-extensions", "chrome", "desktop", "package"]
not_affected_if: ["chrome-157.0.8103.38-or-later"]
published_at: "2026-11-03T21:17:16+00:00"
first_seen_at: "2026-11-03T21:19:13+00:00"
updated_at: "2026-11-03T21:25:17+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121101", "first_seen_at": "2026-11-03T21:19:13+00:00"}]
---

# Chrome: DevTools flaw lets a crafted extension reach privileged pages

Google Chrome before 157.0.8103.38 has a missing authorization check in DevTools. A remote attacker who tricks a user into installing a crafted Chrome extension can bypass access restrictions and reach a privileged page.

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

## How to check

- Check the Chrome version in the browser's About page or with `chrome://version`
- Compare the installed version against `157.0.8103.38`

## Fix

- Google Chrome: `157.0.8103.38`

## Timeline

- 2026-11-03T21:19:13+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121101

## From the sources

Missing authorization in DevTools in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to bypass system access restrictions into a privileged page via a crafted Chrome extension. (Chromium security severity: Low)

---

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