CVE-2017-14521: Wondercms

High severity, CVSS 8.8. EPSS: 7.3% chance of exploitation in the next 30 days.

In WonderCMS 2.3.1, the upload functionality accepts random application extensions and leads to malicious File Upload.

Affected products

• Wondercms Wondercms: version 2.3.0 only; version 2.3.1 only

Published 2018-01-26. Last modified 2026-06-17.