---
id: CVE-2026-106331
title: >-
  Improper input validation in Extensions in Google Chrome prior to
  155.0.8059.39 allowed a remote attacker leveraging social engineering to
  bypass web origin policy into a privileged page via a crafted Chrome extension
summary: >-
  Improper input validation in Extensions in Google Chrome prior to
  155.0.8059.39 allowed a remote attacker leveraging social engineering to
  bypass web origin policy into a privileged page via a crafted Chrome
  extension. (Chromium security…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-20
vendor: google
product: chrome
affected:
  - chrome < 155.0.8059.39
patched:
  - chrome 155.0.8059.39
published: '2026-10-06'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T15:07:09.153'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106331'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html
    label: chrome-cve-admin@google.com
  - url: 'https://issues.chromium.org/issues/553256068'
    label: chrome-cve-admin@google.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106331.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-106331'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-106331'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106331'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00227
epssPercentile: 0.1336
scores:
  nvd: 6.5
  vendor: 4.3
  adp: 6.5
ingestedAt: '2026-10-06T19:13:33.864Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-09T17:16:04.982702Z'
---

## Overview

Improper input validation in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to bypass web origin policy into a privileged page via a crafted Chrome extension. (Chromium security severity: Low)

## Affected

- `chrome < 155.0.8059.39`

## Remediation

Upgrade past the affected range:

- `chrome 155.0.8059.39`

## Vendor advisories

- **Red Hat VEX** · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106331.json)