CVE-2026-54393— MISP 跨站脚本漏洞

MISP Overmind theme stored XSS via unvalidated homepage setting

A stored cross-site scripting vulnerability exists in MISP when the Overmind theme is used. The setHomePage endpoint previously saved the user-controlled path value through setSettingInternal(), bypassing the normal setSetting() validation logic, including validate_homepage, which requires homepage paths to start with /. As a result, an authenticated user could store an arbitrary homepage value, including an XSS payload. The stored value was later rendered in app/View/News/index.ctp as the href attribute of the “Continue to homepage” link without HTML escaping. This could allow execution of attacker-controlled JavaScript in the browser context of the affected MISP instance when the crafted homepage link is rendered and interacted with. The issue is fixed by always persisting the homepage setting through setSetting(), ensuring validation and access checks are applied, and by HTML-escaping the homepage value before rendering it in the news view.

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在Web页面生成时对输入的转义处理不恰当(跨站脚本)

MISP 跨站脚本漏洞

MISP是MISP组织开源的一套开源的软件解决方案。 该产品用于收集、存储、分发、共享网络安全指标,并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP 2.5.40之前版本存在跨站脚本漏洞，该漏洞源于当使用Overmind主题时，setHomePage端点通过setSettingInternal()保存用户控制的路径值，绕过了需要路径以/开头的validate_homepage验证逻辑，导致已认证用户可存储任意主页值。

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