WordPress WP-Appbox plugin <= 4.3.20 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability
Priority LOW 23CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Authenticated (admin user role) Stored Cross-Site Scripting (XSS) in WP-Appbox (WordPress plugin) <= 4.3.20.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00599 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Marcel Schmilgeit | WP-Appbox (WordPress plugin) | <= 4.3.20 – 4.3.20 | — | No fix listed | CNA |
- WP-Appbox (WordPress plugin) VendorMarcel Schmilgeit Affected <= 4.3.20 – 4.3.20 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wp-appbox_project:wp-appbox:*:*:*:*:*:wordpress:*:* | up to 4.3.20 | Vulnerable | Wp-appbox Project |
- cpe:2.3:a:wp-appbox_project:wp-appbox:*:*:*:*:*:wordpress:*:* Versions up to 4.3.20 Vulnerable ·Wp-appbox Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-36910
- 2026-10-03 Alias added: GHSA-pjwx-cx4r-wmqw
References
Sources
- CVE-2021-36910 · CVE Program
- CVE-2021-36910 · NVD
- FIRST EPSS
- GHSA-pjwx-cx4r-wmqw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences