CVE-2026-4357

CriticalCVSS 10.0/10Last modified Sep 3, 2026

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.

Metrics

CVSS 3.1 10.0/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-434

Affected software

No affected versions have been published.

Timeline

Published
Sep 2, 2026
Last modified
Sep 3, 2026
NVD status
Deferred

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CVE-2026-4357: Critical severity, CVSS 10.0 | Vulnix