CVE-2021-24427: Boldgrid w3 Total Cache

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The W3 Total Cache WordPress plugin before 2.1.3 did not sanitise or escape some of its CDN settings, allowing high privilege users to use JavaScript in them, which will be output in the page, leading to an authenticated Stored Cross-Site Scripting issue

Affected products

• Boldgrid w3 Total Cache: before 2.1.3 (fixed in 2.1.3)

Published 2021-07-12. Last modified 2026-06-17.