The admin panel in BlackCat CMS 1.3.6 allows stored XSS (by an admin) via the Display Name field to backend/preferences/ajax_save.php.
https://github.com/BlackCatDevelopment/BlackCatCMS/compare/1.3.6...1.4Beta
https://github.com/BlackCatDevelopment/BlackCatCMS/commits/release-1.4/upload/backend/preferences/ajax_save.php
https://www.exploit-db.com/exploits/49565
Source: Mitre, NVD
Published: 2021-02-16
Updated: 2026-06-17
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 4.8
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
EPSS: 0.0034