nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2020-36854 CVE-2020-36854
MEDIUM
Async JavaScript <= 2.19.07.14 - Authenticated (Subscriber+) Stored Cross-Site Scripting
Record summary
CVE-2020-36854 has a selected CVSS score of 6.4 (medium).
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.
Description source: CVE List
Exploitation context
Known exploitation
- VulnCheck KEV
- Listed · Feb 27, 2020 · VulnCheck
- Reported exploitation
- Observed · VulnCheck
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Oct 20, 2025 · Source: CVE List
Affected products and versions
2| Product | Source | Version range | Status |
|---|---|---|---|
Async JavaScript Plugin for WordPressBrowse David Clough / Async JavaScript Plugin for WordPress | VulnCheck | Version data not supplied | |
Async JavaScriptBrowse cloughit / Async JavaScriptDefault status: unaffected | CVE List | Before 2.20.02.27 | affected |
References
3wordfence.com
https://www.wordfence.com/blog/2020/02/site-takeover-campaign-exploits-multiple-zero-day-vulnerabilities wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/b133888c-7673-4796-917c-486bff1b6b12?source=cve