CVE-2026-57530— Milkdown 跨站脚本漏洞

Milkdown < 7.21.3 Stored XSS via javascript: URL in link href

Milkdown before 7.21.3 contains a stored cross-site scripting vulnerability in the @milkdown/preset-commonmark and @milkdown/components packages that allows attackers with document write access to execute arbitrary JavaScript in the browser context of any user who opens the document or clicks a rendered link. The parseMarkdown runner stores raw URL values from the remark AST as href mark attributes without URL scheme validation, and the ineffective DOMPurify.sanitize call in edit-view.ts treats the bare URL string as a text node and returns it unchanged, allowing javascript: payloads to pass through the link-tooltip preview component and read-only mode anchor elements unmodified.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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)

Milkdown 跨站脚本漏洞

Milkdown milkdown是Milkdown组织的一个基于Markdown的富文本编辑器。 Milkdown 7.21.3之前版本存在跨站脚本漏洞，该漏洞源于parseMarkdown runner未对URL进行方案验证，且DOMPurify.sanitize调用无效，导致javascript:有效载荷通过，造成存储型跨站脚本攻击，攻击者可执行任意JavaScript。

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