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CVE-2025-24018— YesWiki Vulnerable to Authenticated Stored XSS

Quick assessment

Affected
YesWiki yeswiki
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

YesWiki是法国YesWiki组织的一个用 PHP 编写的 wiki 系统。用于以协作方式创建和管理网站。 YesWiki 4.4.5及之前版本存在跨站脚本漏洞，该漏洞源于attach组件处理不存在的文件名时输入验证不当，容易受到存储型跨站脚本攻击。

CVSS 7.6 · High EPSS 0.41% · P34
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I. Basic Information for CVE-2025-24018

Vulnerability Information
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Vulnerability Title
YesWiki Vulnerable to Authenticated Stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
YesWiki is a wiki system written in PHP. In versions up to and including 4.4.5, it is possible for an authenticated user with rights to edit/create a page or comment to trigger a stored XSS which will be reflected on any page where the resource is loaded. The vulnerability makes use of the content edition feature and more specifically of the `{{attach}}` component allowing users to attach files/medias to a page. When a file is attached using the `{{attach}}` component, if the resource contained in the `file` attribute doesn't exist, then the server will generate a file upload button containing the filename. This vulnerability allows any malicious authenticated user that has the right to create a comment or edit a page to be able to steal accounts and therefore modify pages, comments, permissions, extract user data (emails), thus impacting the integrity, availability and confidentiality of a YesWiki instance. Version 4.5.0 contains a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
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
YesWiki 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
YesWiki是法国YesWiki组织的一个用 PHP 编写的 wiki 系统。用于以协作方式创建和管理网站。 YesWiki 4.4.5及之前版本存在跨站脚本漏洞，该漏洞源于attach组件处理不存在的文件名时输入验证不当，容易受到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
YesWiki yeswiki < 4.5.0 -

II. Public POCs for CVE-2025-24018

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7888 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2025-24018

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Patches & Fixes for CVE-2025-24018 (1)

Vendor Advisories for CVE-2025-24018 (1)

Other References for CVE-2025-24018 (1)

Same Patch Batch · YesWiki · 2025-01-21 · 3 CVEs total

CVE-2025-24017 7.6 HIGH YesWiki Vulnerable to Unauthenticated DOM Based XSS
CVE-2025-24019 7.1 HIGH YesWiki vulnerable to authenticated arbitrary file deletion

IV. Related Vulnerabilities

Same product: yeswiki
Same vendor: YesWiki
Same weakness: CWE-79

V. Comments for CVE-2025-24018

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