---
id: "CVE-2026-118333"
kind: "vulnerability"
aliases: ["CVE-2026-118333"]
title: "Google Chrome: missing authorization in Video lets pages bypass origin policy"
severity: "high"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["browsers", "chrome", "endpoints", "other"]
not_affected_if: ["patched-chrome"]
published_at: "2026-10-27T23:17:01+00:00"
first_seen_at: "2026-10-27T23:29:43+00:00"
updated_at: "2026-10-27T23:31:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118333", "first_seen_at": "2026-10-27T23:29:43+00:00"}]
---

# Google Chrome: missing authorization in Video lets pages bypass origin policy

Google Chrome's Video component lacks an authorization check, so a crafted HTML page can bypass the web origin policy. An attacker who lures a user to the page can read or act on content from other sites the user is visiting.

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

## How to check

- Check the installed Chrome version in chrome://settings/help or run `google-chrome --version`
- Confirm whether it is below `156.0.8078.73`

## Fix

- Update Google Chrome to `156.0.8078.73` or later
- Relaunch the browser after the update so the fix takes effect

## Timeline

- 2026-10-27T23:29:43+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-118333

## From the sources

Missing authorization in Video in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)

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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_