Multiplayer Games <= 3.7 Reflected Cross-Site Scripting
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Multiplayer Games WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/multiplayergames.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.7.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00938 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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 |
|---|---|---|---|---|---|
| Multiplayer Games | Multiplayer Games | 3.7 – 3.7 | — | No fix listed | CNA |
- Multiplayer Games VendorMultiplayer Games Affected 3.7 – 3.7 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:multiplayer-plugin_project:multiplayer-plugin:*:*:*:*:*:wordpress:*:* | up to 3.7 | Vulnerable | Multiplayer-plugin Project |
- cpe:2.3:a:multiplayer-plugin_project:multiplayer-plugin:*:*:*:*:*:wordpress:*:* Versions up to 3.7 Vulnerable ·Multiplayer-plugin Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-34644
- 2026-10-03 Alias added: GHSA-8vg8-h2xx-w3r2
References
Sources
- CVE-2021-34644 · CVE Program
- CVE-2021-34644 · NVD
- FIRST EPSS
- GHSA-8vg8-h2xx-w3r2 · GitHub Advisory Database · CC BY 4.0
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