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.
Advisories

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Fixes

Solution

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Workaround

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History

Sat, 18 Oct 2025 03:45:00 +0000

Type Values Removed Values Added
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.
Title Async JavaScript <= 2.19.07.14 - Authenticated (Subscriber+) Stored Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2025-10-18T03:33:24.573Z

Reserved: 2025-10-17T15:05:50.130Z

Link: CVE-2020-36854

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-10-18T04:16:04.037

Modified: 2025-10-18T04:16:04.037

Link: CVE-2020-36854

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.