---
id: "CVE-2026-113147"
kind: "vulnerability"
aliases: ["CVE-2026-113147"]
title: "Chrome: WebShare input flaw lets a crafted page run code in sandbox"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "runtime"
products: [{"name": "google chrome", "fixed": ["156.0.8078.47"], "affected": "< 156.0.8078.47", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["chrome", "desktop-browser", "linux", "macos", "runtime", "windows"]
not_affected_if: ["already-on-156.0.8078.47-or-later"]
published_at: "2026-10-20T22:19:07+00:00"
first_seen_at: "2026-10-23T21:57:24+00:00"
updated_at: "2026-10-23T22:36:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113147", "first_seen_at": "2026-10-23T21:57:24+00:00"}]
---

# Chrome: WebShare input flaw lets a crafted page run code in sandbox

A crafted HTML page can exploit improper input validation in Chrome's WebShare feature to execute arbitrary code inside the browser sandbox. The sources do not say it escapes the sandbox.

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

## Affected

- vendor:google chrome affected < 156.0.8078.47 fixed 156.0.8078.47

## How to check

Run chrome://version and compare the version to 156.0.8078.47.
On managed fleets, query the installed Chrome version with your MDM or package manager.

## Fix

Update Google Chrome to 156.0.8078.47 or later.
Restart the browser after updating so the new version is running.

## Timeline

- 2026-10-23T21:57:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113147

## From the sources

Improper input validation in WebShare in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

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