CVE-2026-87608: Google Chrome

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Google Chrome: before 153.0.8010.36 (fixed in 153.0.8010.36)

Published 2026-09-09. Last modified 2026-09-14.