---
id: "CVE-2026-121141"
kind: "vulnerability"
aliases: ["CVE-2026-121141"]
title: "Chrome: crafted HTML page bypasses web origin policy via editing"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "chrome", "desktop", "runtime"]
not_affected_if: ["chrome-up-to-date"]
published_at: "2026-11-03T21:17:22+00:00"
first_seen_at: "2026-11-03T21:19:22+00:00"
updated_at: "2026-11-03T21:24:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121141", "first_seen_at": "2026-11-03T21:19:22+00:00"}]
---

# Chrome: crafted HTML page bypasses web origin policy via editing

Improper input validation in the Editing component of Google Chrome before 157.0.8103.38 lets a remote attacker bypass web origin policy using a crafted HTML page. The attacker must socially engineer a user into visiting the page, and Chromium rates the issue Low severity.

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

## How to check

- Check the installed Chrome version in the browser's About page or with `google-chrome --version`; versions below `157.0.8103.38` are affected.

## Fix

- Google Chrome: move to `157.0.8103.38` or later.

## Timeline

- 2026-11-03T21:19:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121141

## From the sources

Improper input validation in Editing in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

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