CVE-2023-53891

MEDIUM
Published Dec 15, 2025 Modified Dec 17, 2025 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.

CVSS v3.1 Score

5.4
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor Product
blackcat-cms blackcat_cms

References

Frequently Asked Questions

What is CVE-2023-53891? +
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. It has a CVSS v3.1 base score of 5.4 (MEDIUM).
How severe is CVE-2023-53891? +
CVE-2023-53891 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2023-53891? +
CVE-2023-53891 affects products from blackcat-cms, specifically: blackcat_cms. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-53891? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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