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

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

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.

N/A

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Wikimedia Mediawiki - WikiCategoryTagCloud Extension 安全漏洞

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。

N/A

N/A