CVE-2020-35314: Wondercms

Critical severity, CVSS 9.8. EPSS: 26.9% chance of exploitation in the next 30 days.

A remote code execution vulnerability in the installUpdateThemePluginAction function in index.php in WonderCMS 3.1.3, allows remote attackers to upload a custom plugin which can contain arbitrary code and obtain a webshell via the theme/plugin installer.

Affected products

• Wondercms Wondercms: version 3.1.3 only

Published 2021-04-20. Last modified 2026-06-17.