CVE-2026-87570: Google Google Chrome vulnerability

Q: What must an attacker achieve before this issue can be exploited?

The attacker must first compromise the Chrome renderer process and then use social engineering to get the victim to interact with a crafted file. The issue is not described as exploitable solely by visiting a website.

Q: Which Chrome versions are affected?

Google Chrome versions prior to 153.0.8010.36 are affected. Updating to 153.0.8010.36 or later addresses the affected version range described.

Q: What is the practical impact of successful exploitation?

A successful attacker can bypass Chrome site isolation after meeting the renderer-compromise and social-engineering prerequisites. Site isolation is intended to separate content from different sites, so the bypass weakens that boundary.

Published Sep 9, 2026

Updated

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 Software

1 affected component

Google Google Chrome<153.0.8010.36

Event History

Sep 9, 2026

CVE Published

via MITRE·12:09 AM

Data Sourced

via MITRE·12:09 AM

DescriptionWeakness

Frequently Asked Questions

What must an attacker achieve before this issue can be exploited?

The attacker must first compromise the Chrome renderer process and then use social engineering to get the victim to interact with a crafted file. The issue is not described as exploitable solely by visiting a website.

Which Chrome versions are affected?

Google Chrome versions prior to 153.0.8010.36 are affected. Updating to 153.0.8010.36 or later addresses the affected version range described.

What is the practical impact of successful exploitation?

A successful attacker can bypass Chrome site isolation after meeting the renderer-compromise and social-engineering prerequisites. Site isolation is intended to separate content from different sites, so the bypass weakens that boundary.