CVE-2026-87608: Google Chrome vulnerability

Q: What does an attacker need to exploit this issue?

The attacker must use crafted network traffic and leverage social engineering. The issue is described as enabling a bypass of the web origin policy through improper certificate validation in FedCM.

Q: Which Chrome versions should be remediated?

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

Published Sep 9, 2026

Updated

Improper certificate validation in FedCM in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)

Affected Software

1 affected component

Google Chrome<153.0.8010.36

Event History

Sep 9, 2026

CVE Published

via MITRE·12:10 AM

Data Sourced

via MITRE·12:10 AM

DescriptionWeakness

Frequently Asked Questions

What does an attacker need to exploit this issue?

The attacker must use crafted network traffic and leverage social engineering. The issue is described as enabling a bypass of the web origin policy through improper certificate validation in FedCM.

Which Chrome versions should be remediated?

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