---
id: "CVE-2026-121105"
kind: "vulnerability"
aliases: ["CVE-2026-121105"]
title: "Chrome: network flaw lets a crafted web page read cross-origin data"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "runtime"]
not_affected_if: ["auto-updated-browser"]
published_at: "2026-11-03T21:17:16+00:00"
first_seen_at: "2026-11-03T21:19:14+00:00"
updated_at: "2026-11-03T21:25:14+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121105", "first_seen_at": "2026-11-03T21:19:14+00:00"}]
---

# Chrome: network flaw lets a crafted web page read cross-origin data

A flaw in the Network component of Google Chrome before 157.0.8103.38 lets a remote attacker obtain data from other origins through a crafted HTML page. An attacker who lures a user to such a page can read information that should be isolated from it.

_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 (chrome://settings/help) or run `google-chrome --version` on Linux
- Compare the installed version against `157.0.8103.38`

## Fix

- Google Chrome: `157.0.8103.38` or later

## Timeline

- 2026-11-03T21:19:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121105

## From the sources

Information leak in Network in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data 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_