CVE-2021-36548: Monstra

Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.

A remote code execution (RCE) vulnerability in the component /admin/index.php?id=themes&action=edit_template&filename=blog of Monstra v3.0.4 allows attackers to execute arbitrary commands via a crafted PHP file.

Affected products

• Monstra Monstra: version 3.0.4 only

Published 2021-10-28. Last modified 2026-06-17.