Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-53486— WikiCategoryTagCloud: Reflected Cross-Site Scripting (XSS) via linkstyle attribute in parser function

Quick assessment

Affected
Wikimedia Foundation Mediawiki - WikiCategoryTagCloud extension
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.

Wikimedia Mediawiki - WikiCategoryTagCloud Extension是Wikimedia基金会的一个Wiki的扩展。 Wikimedia Mediawiki - WikiCategoryTagCloud Extension 1.39.13之前版本、1.42.7之前版本和1.43.2之前版本存在安全漏洞，该漏洞源于linkstyle属性未正确转义，可能导致反射型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.29% · P20
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-53486

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
WikiCategoryTagCloud: Reflected Cross-Site Scripting (XSS) via linkstyle attribute in parser function
Source: CVE Program / CVE List V5
Vulnerability Description
The WikiCategoryTagCloud extension is vulnerable to reflected XSS via the linkstyle attribute, which is improperly concatenated into inline HTML without escaping. An attacker can inject JavaScript event handlers such as onmouseenter using carefully crafted input via the {{#tag:tagcloud}} parser function, resulting in arbitrary JavaScript execution when a victim hovers over a link in the category cloud. The vulnerability exists because the linkstyle parameter is only passed through Sanitizer::checkCss() (which does not escape HTML) and is then directly inserted into a style attribute using string concatenation instead of Html::element or Html::openElement. This issue affects Mediawiki - WikiCategoryTagCloud extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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
Wikimedia Mediawiki - WikiCategoryTagCloud Extension 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wikimedia Mediawiki - WikiCategoryTagCloud Extension是Wikimedia基金会的一个Wiki的扩展。 Wikimedia Mediawiki - WikiCategoryTagCloud Extension 1.39.13之前版本、1.42.7之前版本和1.43.2之前版本存在安全漏洞，该漏洞源于linkstyle属性未正确转义，可能导致反射型跨站脚本攻击。
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
Wikimedia Foundation Mediawiki - WikiCategoryTagCloud extension 1.39.x ~ 1.39.13 -

II. Public POCs for CVE-2025-53486

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-53486

请登录查看更多情报信息。

Patches & Fixes for CVE-2025-53486 (1)

Same Patch Batch · Wikimedia Foundation · 2025-07-07 · 12 CVEs total

CVE-2025-7056 Stored XSS in UrlShortener
CVE-2025-7057 Stored XSS in Quiz
CVE-2025-53496 Stored XSS in MediaSearch
CVE-2025-53478 CheckUser: Reflected Cross-Site Scripting (XSS) in Special:Investigate via unsanitized i18
CVE-2025-53499 Unauthorized Inspection of Protected Variables in AbuseFilter
CVE-2025-53491 XSS in FlaggedRevs
CVE-2025-53497 Stored XSS in RelatedArticles
CVE-2025-53498 Lack of Audit Logging in AbuseFilter
CVE-2025-53488 Stored XSS in WikiHiero
CVE-2025-53495 Unauthorized Disclosure of IP Reputation in AbuseFilter
CVE-2025-53487 ApprovedRevs: Stored Cross-Site Scripting (XSS) via unsanitized system messages

IV. Related Vulnerabilities

Same vendor: Wikimedia Foundation
Same weakness: CWE-79

V. Comments for CVE-2025-53486

No comments yet

Leave a comment