CVE-2021-24591: DNA88 Highlight

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

The Highlight WordPress plugin before 0.9.3 does not sanitise its CustomCSS setting, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Affected products

• DNA88 Highlight: before 0.9.3 (fixed in 0.9.3)

Published 2021-09-06. Last modified 2026-06-17.