CVE-2018-16979: Monstra

Medium severity, CVSS 6.1. EPSS: 3% chance of exploitation in the next 30 days.

Monstra CMS V3.0.4 allows HTTP header injection in the plugins/captcha/crypt/cryptographp.php cfg parameter, a related issue to CVE-2012-2943.

Affected products

• Monstra Monstra: version 3.0.4 only

Published 2018-09-12. Last modified 2026-06-17.