CVE-2021-47937: e107 CMS

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

e107 CMS 2.3.0 contains a remote code execution vulnerability that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files. Attackers can upload a crafted theme package through the theme.php endpoint that deploys a web shell to the e107_themes directory, then execute system commands via the payload.php script.

Affected products

• e107 e107 CMS: version 2.3.0 only

Published 2026-05-10. Last modified 2026-07-25.