CVE-2020-36854
published 2025-10-18CVE-2020-36854: 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…
PriorityP180medium6.4CVSS 3.1
AVNACLPRLUINSCCLILAN
ITWVulnCheck KEV
Exploited in the wild
EPSS
0.24%
14.8th percentile
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
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cloughit | async_javascript | < 2.20.02.27 | 2.20.02.27 |
CVSS provenance
nvdv3.16.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
vulncheck6.4MEDIUM
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GHSA
GHSA-c384-m2mr-c4gg: The Async JavaScript plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2
ghsa_unreviewed·2025-10-18
CVE-2020-36854 [MEDIUM] CWE-79 GHSA-c384-m2mr-c4gg: The Async JavaScript plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2
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.
VulnCheck
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
vulncheck·2020·CVSS 6.4
CVE-2020-36854 [MEDIUM] Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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: David Clough Async JavaScript Plugin for WordPress
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: ht
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-18
Published
Exploited in the wild