CVE-2026-87550: Google Chrome vulnerability

Q: Which Chrome installations are in scope?

Google Chrome versions earlier than 153.0.8010.36 are affected. Installations at or above that version are not included in the stated affected range.

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

The attacker needs to cause the target to process a crafted HTML page remotely. The issue could potentially be used to bypass the web origin policy.

Q: How can I determine whether a system is affected?

Check the installed Google Chrome version. Systems running a version lower than 153.0.8010.36 fall within the affected range.

Published Sep 9, 2026

Updated

Improper encoding or escaping of output in CSS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to potentially bypass web origin policy 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

Which Chrome installations are in scope?

Google Chrome versions earlier than 153.0.8010.36 are affected. Installations at or above that version are not included in the stated affected range.

What does an attacker need to exploit this issue?

The attacker needs to cause the target to process a crafted HTML page remotely. The issue could potentially be used to bypass the web origin policy.

How can I determine whether a system is affected?

Check the installed Google Chrome version. Systems running a version lower than 153.0.8010.36 fall within the affected range.