XSS in Cszcms Csz Cms
CVE-2021-47737
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- Cszcms Csz Cms — versions 1.2.7
- Cszcms Csz Cms — versions 1.2.7
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48357 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.cszcms.com/ (Product, product)
- sourceforge.net/projects/cszcms/ (Product, product)
- www.vulncheck.com/advisories/csz-cms-html-injection-vulnerability-via-member-da… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47737?
- CVE-2021-47737 is a medium-severity vulnerability in Cszcms Csz Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-12-23.
- How severe is CVE-2021-47737?
- Medium severity. CVSS v3 base score is 5.4 out of 10.