Vulnerability · Published Sep 2, 2026 · Assigned by WPScan
CVE-2026-4357Embed HTML5 Game <= 1.3 - Unauthenticated Arbitrary File Upload
Critical 10.0
In plain English
A critical-severity unrestricted file upload in Embed HTML5 Game from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)10.0Critical
Exploit odds (30 days)0.5%top 54.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Embed HTML5 Game WordPress plugin through 1.3 does not properly restrict who can upload files via the plugin, as well as what can be uploaded, making it possible for unauthenticated attackers to upload PHP backdoors on affected sites.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Embed HTML5 Game | 0 – through 1.3 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/b364969d-9dac-46ce-83e2-fc0fc2e5f698/ exploit, vdb-entry, technical-description