---
id: CVE-2026-121102
title: >-
  Missing authorization in BackgroundFetch in Google Chrome prior to
  157.0.8103.38 allowed a remote attacker to bypass web origin policy via a
  crafted HTML page
summary: >-
  Missing authorization in BackgroundFetch in Google Chrome prior to
  157.0.8103.38 allowed a remote attacker to bypass web origin policy via a
  crafted HTML page. (Chromium security severity: Medium)
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cvssSource: adp
cwe:
  - CWE-862
vendor: Google
product: Chrome
affected:
  - Chrome >= 157.0.8103.38 < 157.0.8103.38
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-04T20:17:51.707390Z'
published: '2026-11-03'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T20:21:08.892Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121102'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html
  - url: 'https://issues.chromium.org/issues/40059500'
tags:
  - cve.org
epss: 0.00259
epssPercentile: 0.17695
ingestedAt: '2026-11-05T21:36:00.543Z'
---

## Overview

Missing authorization in BackgroundFetch in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

## Affected

- `Chrome >= 157.0.8103.38 < 157.0.8103.38`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.