CVE-2018-10121: Monstra

Medium severity, CVSS 4.8. EPSS: 0.7% chance of exploitation in the next 30 days.

plugins/box/pages/pages.admin.php in Monstra CMS 3.0.4 has a stored XSS vulnerability when an attacker has access to the editor role, and enters the payload in the title section of an admin/index.php?id=pages&action=edit_page&name=error404 (aka Edit 404 page) action.

Affected products

• Monstra Monstra: version 3.0.4 only

Published 2018-04-16. Last modified 2026-06-17.