CVE-2023-53891 MEDIUM

CVE-2023-53891: Blackcat CMS 1.4 Stored Cross-Site Scripting via Page Modification

Vendor Blackcat-Cms
Product Blackcat CMS
Weakness CWE-79 · XSS
Published December 15, 2025
Last update April 7, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

Blackcat CMS 1.4 contains a stored cross-site scripting vulnerability that allows authenticated users to inject malicious scripts into page content. Attackers can insert JavaScript payloads in the page modification interface that execute when other users view the compromised page.

Key dates

02Disclosure timeline

December 15, 2025 CVE published
April 7, 2026 Record updated