Possible XSS vulnerability with certain configurations of rails-html-sanitizer

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both "math" and "style" elements, or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Rails 跨站脚本漏洞

Rails是美国Rails团队的一套基于Ruby语言的开源Web应用框架。 Rails rails-html-sanitizer 1.4.4之前版本存在跨站脚本漏洞，该漏洞源于Rails::Html::Sanitizer 的某些配置可能存在 XSS 漏洞，如果应用程序开发人员通过以下任一方式覆盖了消毒剂的允许标签，攻击者可能会注入内容：允许“math”和 style 元素，或者同时允许 svg 和 style 元素。

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