CVE-2021-47737

5.1 mediumEPSS 0.3%

Medium (5.1) in cszcms csz cms. EPSS 0.3% chance of exploitation in the next 30 days.

CSZ CMS 1.2.7 contains an HTML injection vulnerability that allows authenticated users to insert malicious hyperlinks in message titles. Attackers can craft POST requests to the member messaging system with HTML-based links to potentially conduct phishing or social engineering attacks.

Severity

CVSS 4.0

5.1 medium

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

CVSS 3.1

5.4 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2025-12-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cszcms:csz_cms

References

https://sourceforge.net/projects/cszcms/
https://www.cszcms.com/
https://www.exploit-db.com/exploits/48357
https://www.vulncheck.com/advisories/csz-cms-html-injection-vulnerability-via-member-dashboard

Check your stack JSON