CVE-2021-4321: Google Chrome

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Policy bypass in Blink in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)

Affected products

• Google Chrome: before 91.0.4472.77 (fixed in 91.0.4472.77)

Published 2023-07-29. Last modified 2026-06-17.