CVE-2020-21387: Maccms

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

A cross-site scripting (XSS) vulnerability in the parameter type_en of Maccms 10 allows attackers to obtain the administrator cookie and escalate privileges via a crafted payload.

Affected products

• Maccms Maccms: version 10.0 only

Published 2021-10-04. Last modified 2026-06-17.