CVE-2021-47735— CMSimple 5.4 Authenticated Remote Code Execution via Template Editing
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I. Basic Information for CVE-2021-47735
Vulnerability Information
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Vulnerability Title
CMSimple 5.4 Authenticated Remote Code Execution via Template Editing
Source: NVD (National Vulnerability Database)
Vulnerability Description
CMSimple 5.4 contains an authenticated remote code execution vulnerability that allows logged-in attackers to inject malicious PHP code into template files. Attackers can exploit the template editing functionality by crafting a reverse shell payload and saving it through the template editing endpoint with a valid CSRF token.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
CMSimple 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CMSimple是CMSimple开源的一种自由的内容管理系统。 CMSimple 5.4版本存在代码注入漏洞，该漏洞源于模板编辑功能对输入验证不足，可能导致远程代码执行。
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
II. Public POCs for CVE-2021-47735
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Same Patch Batch · Cmsimple · 2025-12-23 · 4 CVEs total
| CVE-2021-47734 | 7.8 HIGH | CMSimple 5.4 Authenticated Local File Inclusion Remote Code Execution |
| CVE-2021-47732 | 6.1 MEDIUM | CMSimple 5.2 Stored Cross-Site Scripting via Filebrowser External Input |
| CVE-2021-47733 | 6.1 MEDIUM | CMSimple 5.4 Cross-Site Scripting via HTML Unicode Encoding |
IV. Related Vulnerabilities
Same product: Cmsimple
Same vendor: Cmsimple
Same weakness: CWE-94
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Sentry 8.2.0 Remote Code Execution via Pickle Deserializatio - CVE-2022-50944
Aero CMS 0.0.1 PHP Code Injection via posts.php - CVE-2026-8211
codelibs Fess JSP File AdminDesignAction.java update code in
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