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CVE-2020-37238— CMS Made Simple 2.2.15 Stored XSS via SVG File Upload

Quick assessment

Affected
Cmsmadesimple 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 2.2.15版本存在跨站脚本漏洞，该漏洞源于SVG文件上传存在存储型跨站脚本，可能导致具有内容管理器访问权限的经过身份验证的用户注入恶意脚本，通过文件管理器上传包含嵌入式JavaScript的SVG文件，在其他经过身份验证的用户访问上传文件时执行，实现cookie窃取和会话劫持。

CVSS 6.4 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cmsmadesimple CMS Made Simple 2.2.15 affected
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I. Basic Information for CVE-2020-37238

Vulnerability Information
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Vulnerability Title
CMS Made Simple 2.2.15 Stored XSS via SVG File Upload
Source: CVE Program / CVE List V5
Vulnerability Description
CMS Made Simple 2.2.15 contains a stored cross-site scripting vulnerability that allows authenticated users with Content Manager access to inject malicious scripts through SVG file uploads. Attackers can upload SVG files containing embedded JavaScript to the file manager, which executes when other authenticated users access the uploaded file, enabling cookie theft and session hijacking.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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 跨站脚本漏洞
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 2.2.15版本存在跨站脚本漏洞，该漏洞源于SVG文件上传存在存储型跨站脚本，可能导致具有内容管理器访问权限的经过身份验证的用户注入恶意脚本，通过文件管理器上传包含嵌入式JavaScript的SVG文件，在其他经过身份验证的用户访问上传文件时执行，实现cookie窃取和会话劫持。
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
Cmsmadesimple CMS Made Simple 2.2.15 -

II. Public POCs for CVE-2020-37238

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III. Intelligence Information for CVE-2020-37238

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Vendor Advisories for CVE-2020-37238 (1)

Exploits & Public PoCs for CVE-2020-37238 (1)

Vendor Pages for CVE-2020-37238 (2)

IV. Related Vulnerabilities

Same product: CMS Made Simple
Same weakness: CWE-79

V. Comments for CVE-2020-37238

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