CVE-2026-4357

10.0 criticalEPSS 0.5%

Critical (10.0). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

10.0 critical

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2026-09-02
Modified: 2026-09-03
Record from: the NVD, synced 2026-10-19

References

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

Check your stack JSON