---
id: CVE-2026-106253
title: >-
  Incorrect authorization in Extensions in Google Chrome prior to 155.0.8059.39
  allowed a remote attacker to obtain cross-origin data via a crafted Chrome
  extension
summary: >-
  Incorrect authorization in Extensions in Google Chrome prior to 155.0.8059.39
  allowed a remote attacker to obtain cross-origin data via a crafted Chrome
  extension. (Chromium security severity: Medium)
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
cwe:
  - CWE-863
vendor: google
product: chrome
affected:
  - chrome < 155.0.8059.39
patched:
  - chrome 155.0.8059.39
published: '2026-10-06'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T13:12:33.450'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106253'
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/513741326'
    label: chrome-cve-admin@google.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106253.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-106253'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-106253'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106253'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T10:11:13.917220Z'
ingestedAt: '2026-10-06T19:13:33.903Z'
epss: 0.00179
epssPercentile: 0.07421
scores:
  nvd: 4.3
  vendor: 6.5
---

## Overview

Incorrect authorization in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)

## 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-2026-106253.json)