CVE-2026-4357 — CRITICAL (10.0)

Vulnerability 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.

CVSS Score

10.0

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-434

References

https://wpscan.com/vulnerability/b364969d-9dac-46ce-83e2-fc0fc2e5f698/

FAQ

What is CVE-2026-4357?

CVE-2026-4357 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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 u...

How severe is CVE-2026-4357?

CVE-2026-4357 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-4357?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.