---
id: "CVE-2026-121050"
kind: "vulnerability"
aliases: ["CVE-2026-121050"]
title: "Chrome on iOS: race condition lets crafted web page bypass origin policy"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["chrome", "ios", "mobile-browser", "runtime"]
not_affected_if: ["chrome-not-installed", "updated-to-157.0.8103.38"]
published_at: "2026-11-03T21:17:09+00:00"
first_seen_at: "2026-11-03T21:19:10+00:00"
updated_at: "2026-11-03T21:27:18+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121050", "first_seen_at": "2026-11-03T21:19:10+00:00"}]
---

# Chrome on iOS: race condition lets crafted web page bypass origin policy

A race condition in Chrome's mobile browser on iOS lets a crafted HTML page bypass the web origin policy. An attacker who lures a user to that page can read or act on content from other sites the user has open, within the browser's sandboxed rules.

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

## How to check

- Open Chrome on iOS and check the version under Chrome menu > Settings > About Chrome
- Confirm whether the installed version is below `157.0.8103.38`

## Fix

- Chrome on iOS: update to `157.0.8103.38` or later

## Timeline

- 2026-11-03T21:19:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121050

## From the sources

Race condition in Mobile in Google Chrome on on iOS prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

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