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CVE-2026-4225— CMS Made Simple User Management listusers.php cross site scripting

Quick assessment

Affected
n/a CMS Made Simple
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CMS Made Simple（CMSMS）是Cmsms团队的一套开源的内容管理系统(CMS)。该系统支持基于角色的权限管理系统、基于向导的安装与更新机制、智能缓存机制等。 CMS Made Simple 2.2.21及之前版本存在代码注入漏洞，该漏洞源于对组件User Management Module中文件admin/listusers.php的参数Message的操作，可能导致跨站脚本。

CVSS 2.4 · Low EPSS 0.35% · P26
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I. Basic Information for CVE-2026-4225

Vulnerability Information
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Vulnerability Title
CMS Made Simple User Management listusers.php cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in CMS Made Simple up to 2.2.21. Impacted is an unknown function of the file admin/listusers.php of the component User Management Module. Performing a manipulation of the argument Message results in cross site scripting. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
CMS Made Simple 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CMS Made Simple（CMSMS）是Cmsms团队的一套开源的内容管理系统(CMS)。该系统支持基于角色的权限管理系统、基于向导的安装与更新机制、智能缓存机制等。 CMS Made Simple 2.2.21及之前版本存在代码注入漏洞，该漏洞源于对组件User Management Module中文件admin/listusers.php的参数Message的操作，可能导致跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- CMS Made Simple 2.2.0 cpe:2.3:a:cms_made_simple:cms_made_simple:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-4225

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III. Intelligence Information for CVE-2026-4225

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Vendor Advisories for CVE-2026-4225 (2)

Other References for CVE-2026-4225 (1)

Same Patch Batch · n/a · 2026-03-16 · 21 CVEs total

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IV. Related Vulnerabilities

Same product: CMS Made Simple
Same vendor: n/a
Same weakness: CWE-79

V. Comments for CVE-2026-4225

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