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10.0

Embed HTML5 Game plugin up to 1.3 allows file upload

CVE-2026-4357 · published 1 day ago
Summary

The Embed HTML5 Game plugin for WordPress, versions up through 1.3, does not check who is uploading files or what type of file is allowed. Because of that, a stranger could place a malicious script on your site, giving them control over the server. Upgrade the plugin to a fixed version or remove/disable it until the issue is patched.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
unknown embed html5 game <= 1.3
Original advisory text
Embed HTML5 Game <= 1.3 - Unauthenticated Arbitrary File Upload
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.
References
Severity
10.0 Critical
CVSS 3.1: 10.0 (MITRE)
Type
CWE-434Unrestricted File Upload
Timeline
Published2 Sep 2026
Updated2 Sep 2026
First seen2 Sep 2026
Sources
CVE-2026-4357 · NVD
CVE-2026-4357 · MITRE
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