CVE-2020-25877: Blackcat-CMS Blackcat CMS

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

A stored cross site scripting (XSS) vulnerability in the 'Add Page' feature of BlackCat CMS 1.3.6 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the 'Title' parameter.

Affected products

• Blackcat-CMS Blackcat CMS: version 1.3.6 only

Published 2021-07-09. Last modified 2026-06-17.