---
id: CVE-2026-87570
title: >-
  Incorrect authorization in SiteIsolation in Google Chrome prior to
  153.0.8010.36 allowed a remote attacker who had compromised the renderer
  process and leveraged social engineering to bypass site isolation via a
  crafted file
summary: >-
  Incorrect authorization in SiteIsolation in Google Chrome prior to
  153.0.8010.36 allowed a remote attacker who had compromised the renderer
  process and leveraged social engineering to bypass site isolation via a
  crafted file. (Chromium s…
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'
cwe:
  - CWE-863
vendor: google
product: chrome
affected:
  - chrome < 153.0.8010.36
patched:
  - chrome 153.0.8010.36
published: '2026-09-09'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T16:18:06.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87570'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html
    label: chrome-cve-admin@google.com
  - url: 'https://issues.chromium.org/issues/517215407'
    label: chrome-cve-admin@google.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87570.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-87570'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-87570'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-10T15:01:38.085519Z'
epss: 0.00226
epssPercentile: 0.13615
scores:
  nvd: 8.8
  vendor: 7.2
  adp: 8.8
ingestedAt: '2026-09-09T01:17:17.508Z'
---

## Overview

Incorrect authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass site isolation via a crafted file. (Chromium security severity: Medium)

## Affected

- `chrome < 153.0.8010.36`

## Remediation

Upgrade past the affected range:

- `chrome 153.0.8010.36`

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87570.json)