CVE-2021-4322: Google Chrome

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Use after free in DevTools in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Medium)

Affected products

• Google Chrome: before 91.0.4472.77 (fixed in 91.0.4472.77)

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