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CVE-2025-46558— org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content

CVSS 9.1 · Critical EPSS 0.45% · P37
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I. Basic Information for CVE-2025-46558

Vulnerability Information
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Vulnerability Title
org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content
Source: CVE Program / CVE List V5
Vulnerability Description
XWiki Contrib's Syntax Markdown allows importing Markdown content into wiki pages and creating wiki content in Markdown. In versions starting from 8.2 to before 8.9, the Markdown syntax is vulnerable to cross-site scripting (XSS) through HTML. In particular, using Markdown syntax, it's possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that this code is executed by a user with admins or programming rights, this issue compromises the confidentiality, integrity and availability of the whole XWiki installation. This issue has been patched in version 8.9.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
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
Markdown Syntaxes 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Markdown Syntaxes是XWiki Contrib开源的一个Markdown语法的解析器和呈现器。 Markdown Syntaxes 8.2至8.9之前版本存在跨站脚本漏洞，该漏洞源于Markdown语法处理不当，可能导致跨站脚本攻击。
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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
xwiki-contribsyntax-markdown >= 8.2, < 8.9 -

II. Public POCs for CVE-2025-46558

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 9008 chars
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III. Intelligence Information for CVE-2025-46558

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Patches & Fixes for CVE-2025-46558 (1)

Vendor Advisories for CVE-2025-46558 (1)

Other References for CVE-2025-46558 (1)

IV. Related Vulnerabilities

Same vendor: xwiki-contrib
Same weakness: CWE-79

V. Comments for CVE-2025-46558

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