CVE-2020-36854

Published: Oct 18, 2025Modified: Jun 17, 2026Deferred

6.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Exploitability: 3.1 / Impact: 2.7

Source: security@wordfence.com (Secondary)

Description

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.

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://www.wordfence.com/blog/2020/02/site-takeover-campaign-exploits-multiple-zero-day-vulnerabilities/

Source: security@wordfence.com

https://www.wordfence.com/threat-intel/vulnerabilities/id/b133888c-7673-4796-917c-486bff1b6b12?source=cve

Source: security@wordfence.com

Timeline

No history available yet.