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CVE-2025-50183— OpenList (frontend) allows XSS Attacks in the built-in Markdown Viewer

Quick assessment

Affected
OpenListTeam OpenList
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.

OpenList Frontend是OpenList Team开源的一个应用程序,保护开源项目免受基于信任的攻击。 OpenList Frontend 4.0.0-rc.4之前版本存在跨站脚本漏洞，该漏洞源于文件预览功能中.py文件可能被解释为HTML，导致存储型跨站脚本攻击。

CVSS 6.5 · Medium EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-50183

Vulnerability Information
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Vulnerability Title
OpenList (frontend) allows XSS Attacks in the built-in Markdown Viewer
Source: CVE Program / CVE List V5
Vulnerability Description
OpenList Frontend is a UI component for OpenList. Prior to version 4.0.0-rc.4, a vulnerability exists in the file preview/browsing feature of the application, where files with a .py extension that contain JavaScript code wrapped in <script> tags may be interpreted and executed as HTML in certain modes. This leads to a stored XSS vulnerability. This issue has been patched in version 4.0.0-rc.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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
OpenList Frontend 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenList Frontend是OpenList Team开源的一个应用程序,保护开源项目免受基于信任的攻击。 OpenList Frontend 4.0.0-rc.4之前版本存在跨站脚本漏洞，该漏洞源于文件预览功能中.py文件可能被解释为HTML，导致存储型跨站脚本攻击。
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
OpenListTeam OpenList < 4.0.0-rc.4 -

II. Public POCs for CVE-2025-50183

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III. Intelligence Information for CVE-2025-50183

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IV. Related Vulnerabilities

Same product: OpenList
Same vendor: OpenListTeam
Same weakness: CWE-79

V. Comments for CVE-2025-50183

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