What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-15 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• blackcat-cms Blackcat CMS: 1.4

References

• https://blackcat-cms.org/
• https://www.exploit-db.com/exploits/51604
• https://www.vulncheck.com/advisories/blackcat-cms-stored-cross-site-scripting-via-page-modification
• https://www.exploit-db.com/exploits/51604

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