XSS in Cszcms Csz Cms
CVE-2021-47738
CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend dashboard.
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 (18.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.7% 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/48354 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.cszcms.com/ (Product, product)
- sourceforge.net/projects/cszcms/ (Product, product)
- www.vulncheck.com/advisories/csz-cms-persistent-cross-site-scripting-via-privat… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47738?
- CVE-2021-47738 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-2021-47738?
- Medium severity. CVSS v3 base score is 5.4 out of 10.