CVE-2025-66026
REDAXO CMS is vulnerable to Reflected XSS in Mediapool Info Banner via args[types]
描述
### Summary A reflected Cross-Site Scripting (XSS) vulnerability exists in the Mediapool view where the request parameter `args[types]` is rendered into an info banner without HTML-escaping. This allows arbitrary JavaScript execution in the backend context when an authenticated user visits a crafted link while logged in. ### Details Control Flow: 1. `redaxo/src/addons/mediapool/pages/index.php` reads args via `rex_request('args', 'array')` and passes them through as `$argUrl` to `media.list.php`. 2. `redaxo/src/addons/mediapool/pages/media.list.php` injects `$argUrl['args']['types']` into an HTML string without escaping: ``` if (!empty($argUrl['args']['types'])) { echo rex_view::info(rex_i18n::msg('pool_file_filter') . ' <code>' . $argUrl['args']['types'] . '</code>'); } ``` ### PoC 1. Log into the REDAXO backend. 2. While authenticated, open a crafted URL like: `<host>/index.php?page=mediapool/media&args[types]="><img+src%3Dx+onerror%3Dalert%28document.domain%29>` 4. The info banner displays the unescaped value and activates the injected onerror handler, which opens an alert pop-up. ### Impact Arbitrary JavaScript execution in the backend, enabling theft of session cookies, CSRF tokens, or other sensitive data, and allowing an attacker to perform any administrative actions on behalf of the affected user.
如何修補 CVE-2025-66026
要修補 CVE-2025-66026,請將受影響套件升級到下列已修補版本。
- —升級至 5.20.1 或更新版本
CVE-2025-66026 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 5.20.1