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CVE-2025-61638— Sanitizer::validateAttributes data-XSS

Quick assessment

Affected
Wikimedia Foundation MediaWiki
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.

MediaWiki和Wikimedia Parsoid都是美国维基媒体（Wikimedia）基金会的产品。MediaWiki是一套自由免费的基于网络的Wiki引擎。该产品可用于部署内部的知识管理和内容管理系统。Wikimedia Parsoid是一个应用程序。提供一个一个允许在Wikitext和HTML之间来回转换的库。 Wikimedia MediaWiki和Wikimedia Parsoid存在安全漏洞，该漏洞源于程序文件存在输入中和不当，可能导致跨站脚本攻击。以下产品及版本受到影响：MediaWik

AI Predicted 5.4 Difficulty: Moderate EPSS 0.27% · P18
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I. Basic Information for CVE-2025-61638

Vulnerability Information
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Vulnerability Title
Sanitizer::validateAttributes data-XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Parsoid. This vulnerability is associated with program files includes/parser/Sanitizer.Php, src/Core/Sanitizer.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1; Parsoid: from * before 0.16.6, 0.20.4, 0.21.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
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
MediaWiki和Wikimedia Parsoid 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MediaWiki和Wikimedia Parsoid都是美国维基媒体（Wikimedia）基金会的产品。MediaWiki是一套自由免费的基于网络的Wiki引擎。该产品可用于部署内部的知识管理和内容管理系统。Wikimedia Parsoid是一个应用程序。提供一个一个允许在Wikitext和HTML之间来回转换的库。 Wikimedia MediaWiki和Wikimedia Parsoid存在安全漏洞，该漏洞源于程序文件存在输入中和不当，可能导致跨站脚本攻击。以下产品及版本受到影响：MediaWik
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
Wikimedia Foundation MediaWiki * ~ 1.39.14, 1.43.4, 1.44.1 -
Wikimedia Foundation Parsoid * ~ 0.16.6, 0.20.4, 0.21.1 -

II. Public POCs for CVE-2025-61638

# POC Description Source Link Shenlong Link
1 CVE-2025-61638 PoC https://github.com/gui-ying233/CVE-2025-61638 POC Details
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III. Intelligence Information for CVE-2025-61638

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Same Patch Batch · Wikimedia Foundation · 2026-02-02 · 21 CVEs total

CVE-2025-61635 Add rate limiting to ApiFancyCaptchaReload
CVE-2025-61642 Stored XSS through system messages provided to CodexHtmlForms
CVE-2025-61644 i18n XSS through Special:Watchlist
CVE-2025-61643 EventStreams publishes suppressed recent change entries that are suppressed from their cre
CVE-2025-61641 API list=allpages with maxsize is making really slow queries
CVE-2025-61634 HTML rest endpoint needs PoolCounter and proper parser cache check
CVE-2025-61640 Stored XSS through system messages in Special:RecentChangesLinked (MW Core)
CVE-2025-61637 Stored XSS through system messages in MW Core
CVE-2025-61639 Suppressed blocked IP is visible in Special:BlockList, RC, and other places
CVE-2025-61636 Codex Special:Block vulnerable to message key XSS
CVE-2025-6594 XSS in Special:ApiSandbox
CVE-2025-6591 HTML injection in API action=feedcontributions output from i18n message
CVE-2025-6595 MediaWiki 安全漏洞
CVE-2025-6592 Creating a permanent account from a temporary account associates temp username and IP addr
CVE-2025-6927 Autoblocks from global account suppressions are publicly visible
CVE-2025-6597 MediaWiki should not consider autocreation as login for the purposes of security reauthent
CVE-2025-6596 Vector inserts portlet labels as HTML, allowing for stored XSS through system messages
CVE-2025-6593 "{{SITENAME}} registered email address has been changed" email sent to unverified email ad
CVE-2025-6589 With MultiBlocks enabled and a user who is suppressed via a MultiBlock, a user without 'hi
CVE-2025-6590 Complete content leak of private wikis due to PasswordReset Wikitext injection in error me

IV. Related Vulnerabilities

Same product: MediaWiki
Same vendor: Wikimedia Foundation
Same weakness: CWE-79

V. Comments for CVE-2025-61638

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