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Vulnerability record · CVE-2021-47738 · published 23 December 2025

CVE-2021-47738: Cszcms csz cms cross-site scripting vulnerability

Cszcms · Csz Cms

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.

5.1 CVSS 4.0 Medium EPSS 0.28% · top 81.3% CWE-79 · Cross-site scripting
5.1CVSS 4.0 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sourceforge.net/projects/cszcms/ Product
https://www.cszcms.com/ Product
https://www.exploit-db.com/exploits/48354 ExploitThird Party AdvisoryVDB Entry
https://www.vulncheck.com/advisories/csz-cms-persistent-cross-site-scripting-via-private-messaging Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-25414Cszcms csz cms unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in /admin/upgrade of CSZ CMS v1.3.0 allows attackers to execute arbitrary code via uploading a crafted Zip fil…EPSS 1.6%9.8CVE-2022-27161Cszcms csz cms sql injection vulnerabilityCsz Cms 1.2.2 is vulnerable to SQL Injection via cszcms_admin_Members_viewUsersEPSS 1.3%9.8CVE-2022-27162Cszcms csz cms sql injection vulnerabilityCSZ CMS 1.2.2 is vulnerable to SQL Injection via cszcms_admin_Members_editUserEPSS 1.1%9.8CVE-2022-27163Cszcms csz cms sql injection vulnerabilityCSZ CMS 1.2.2 is vulnerable to SQL Injection via cszcms_admin_Users_editUserEPSS 1.2%9.8CVE-2022-27164Cszcms csz cms sql injection vulnerabilityCSZ CMS 1.2.2 is vulnerable to SQL Injection via cszcms_admin_Users_viewUsersEPSS 1.1%9.8CVE-2022-27165Cszcms csz cms sql injection vulnerabilityCSZ CMS 1.2.2 is vulnerable to SQL Injection via cszcms_admin_Plugin_manager_setstatusEPSS 1.1%9.8CVE-2020-21250Cszcms csz cms sql injection vulnerabilityCSZ CMS v1.2.4 was discovered to contain an arbitrary file upload vulnerability in the component /core/MY_Security.php.EPSS 1.2%9.8CVE-2019-15524Cszcms csz cms unrestricted file upload vulnerabilityCSZ CMS 1.2.3 allows arbitrary file upload, as demonstrated by a .php file to admin/filemanager in the File Management Module, which leads to remote …EPSS 3.1%

Source: NIST National Vulnerability Database (record CVE-2021-47738), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.