---
id: "CVE-2026-126862"
page: "https://infrastack.ai/live/CVE-2026-126862"
kind: "vulnerability"
aliases: ["CVE-2026-126862"]
title: "Chrome for Android: input validation flaw lets local app bypass web origin policy"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["android", "chrome", "runtime"]
not_affected_if: ["chrome-up-to-date", "no-co-installed-malicious-app"]
published_at: "2026-11-11T23:17:14+00:00"
first_seen_at: "2026-11-11T23:29:37+00:00"
updated_at: "2026-11-11T23:33:26+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126862", "first_seen_at": "2026-11-11T23:29:37+00:00"}]
exploit_sources: []
---

# Chrome for Android: input validation flaw lets local app bypass web origin policy

Link for people: https://infrastack.ai/live/CVE-2026-126862 (this .md is for agents)

Google Chrome on Android before 157.0.8103.78 has an input validation flaw in its core code. A malicious app installed on the same phone can bypass the web origin policy, which normally keeps one site from reading another site's data.

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

## How to check

- Open Chrome, go to the menu, then Settings > About Chrome, and read the version number.
- Compare the installed version with `157.0.8103.78`.

## Fix

- Google Chrome for Android: upgrade to `157.0.8103.78` or later.

## Timeline

- 2026-11-11T23:29:37+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126862

## From the sources

Improper input validation in Core in Google Chrome on on Android prior to 157.0.8103.78 allowed a local attacker to bypass web origin policy via a co-installed app. (Chromium security severity: High)

---

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