CVE-2026-87570: Google Chrome

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Google Chrome: before 153.0.8010.36 (fixed in 153.0.8010.36)

Published 2026-09-09. Last modified 2026-09-10.