CVE-2025-46558

描述

### Impact The Markdown syntax is vulnerable to XSS through HTML. In particular, using Markdown syntax, it's possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that this code is executed by a user with admins or programming rights, this issue compromises the confidentiality, integrity and availability of the whole XWiki installation. To reproduce, on an instance where the CommonMark Markdown Syntax 1.2 extension is installed, log in as a user without script rights. Edit a document and set its syntax to Markdown. Then , add the content `<script>alert("XSS")</script>` and refresh the page. If an alert appears containing "XSS", then the instance is vulnerable. ### Patches This has been patched in version 8.9 of the CommonMark Markdown Syntax 1.2 extension. ### Workarounds We're not aware of any workaround except upgrading. ### References * https://jira.xwiki.org/browse/MARKDOWN-80 * https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035

如何修補 CVE-2025-46558

要修補 CVE-2025-46558,請將受影響套件升級到下列已修補版本。

• —升級至 8.9 或更新版本

CVE-2025-46558 正在被利用嗎?

低 — EPSS 為 3.0%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 8.2, < 8.9

CVSS 分數