CVE-2020-36854
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-18

Last updated on: 2025-10-21

Assigner: Wordfence

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.
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Meta Information
Published
2025-10-18
Last Modified
2025-10-21
Generated
2026-06-16
AI Q&A
2025-10-18
EPSS Evaluated
2026-06-15
NVD
CVE-2020-36854
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wordpress async_javascript_plugin 2.19.07.14
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 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.
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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Async JavaScript plugin for WordPress, affecting versions up to and including 2.19.07.14. It occurs because there are missing authorization checks on the aj_steps AJAX action and a lack of sanitization on settings saved via a specific function. This allows authenticated users with subscriber-level permissions or higher to inject malicious scripts that execute whenever a user visits the affected page.

Impact Analysis

The vulnerability can allow attackers with subscriber-level access or higher to inject malicious scripts into web pages. These scripts execute when other users access the page, potentially leading to unauthorized actions, data theft, or session hijacking. This can compromise the security and integrity of the website and its users.

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