CVE-2026-87580: Google Chrome vulnerability

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

The attacker must first compromise the Chrome renderer process, then use social engineering to get the user to interact with a crafted HTML page. The issue is not described as exploitable solely by visiting an arbitrary page.

Q: Which Chrome versions should be remediated?

Google Chrome versions prior to 153.0.8010.36 are affected. Update Chrome to 153.0.8010.36 or later.

Q: What security boundary can this vulnerability weaken?

A successful exploit can bypass Chrome site isolation. This could allow a compromised renderer process to cross an intended isolation boundary.

Published Sep 9, 2026

Updated

Incorrect authorization in WebAppInstalls 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 HTML page. (Chromium security severity: Medium)

Affected Software

1 affected component

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, then use social engineering to get the user to interact with a crafted HTML page. The issue is not described as exploitable solely by visiting an arbitrary page.

Which Chrome versions should be remediated?

Google Chrome versions prior to 153.0.8010.36 are affected. Update Chrome to 153.0.8010.36 or later.

What security boundary can this vulnerability weaken?