CVE-2020-36854: Cloughit Async JavaScript

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Async JavaScript plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.19.07.14. This is due to missing authorization checks on the aj_steps AJAX aciton along with a lack on sanitization on the settings saved via the function. This makes it possible for authenticated attackers with subscriber level permissions and above to inject malicious web scripts into a page that execute whenever a user accesses that page.

Affected products

• Cloughit Async JavaScript: before 2.20.02.27 (fixed in 2.20.02.27)

Published 2025-10-18. Last modified 2026-06-17.