CVE-2021-30558: Google Chrome

High severity, CVSS 8.8. EPSS: 11.5% chance of exploitation in the next 30 days.

Insufficient policy enforcement in content security policy in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chrome security severity: Medium)

Affected products

• Google Chrome: before 91.0.4472.77 (fixed in 91.0.4472.77)

Published 2023-01-02. Last modified 2026-06-17.