CVE-2020-23219: Monstra CMS

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

Monstra CMS 3.0.4 allows attackers to execute arbitrary code via a crafted payload entered into the "Snippet content" field under the "Edit Snippet" module.

Affected products

• Monstra Monstra CMS: version 3.0.4 only

Published 2021-07-01. Last modified 2026-06-17.