CVE-2023-53891

Name: CVE-2023-53891
Creator: NVD / NIST
Published: 2025-12-15T21:15:52.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2023-53891 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

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

CVSS 4.0

5.1/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.21%

10.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Blackcat-Cms	Blackcat Cms	1.4

References

https://blackcat-cms.org/Product
https://www.exploit-db.com/exploits/51604Exploit, Third Party Advisory, VDB Entry
https://www.vulncheck.com/advisories/blackcat-cms-stored-cross-site-scripting-via-page-modificationThird Party Advisory
https://www.exploit-db.com/exploits/51604Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Dec 15, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-53891?

How severe is CVE-2023-53891?

CVE-2023-53891 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2023-53891?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-53891?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST