CVE-2026-48591— Earmark HTML属性未转义存储型XSS漏洞
可能的 ATT&CK 技术 1AI
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一、 漏洞 CVE-2026-48591 基础信息
漏洞信息
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Vulnerability Title
Stored XSS via unescaped HTML attribute values in earmark
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
Improper Neutralization of Script in Attributes in a Web Page vulnerability in pragdave earmark allows stored cross-site scripting via unescaped HTML attribute values. 'Elixir.Earmark.Transform':_make_att1/2 in lib/earmark/transform.ex splices attribute values verbatim between two literal " bytes: [" ", name, "=\"", value, "\""]. Text nodes are routed through the existing escape function which encodes " as ", but attribute values never visit that path. A markdown link whose URL or title contains a bare " closes the attribute early and lets the trailing bytes be parsed by the browser as fresh HTML attributes. For example, [click](http://example.com/?a=x" onerror="alert(1)) renders as <a href="http://example.com/?a=x" onerror="alert(1)">click</a>, executing arbitrary JavaScript in the victim's browser. The earmark library is no longer maintained and has been retired on Hex. No patched version will be released. All releases from 1.4.1 onward are affected, and users should migrate to a maintained Markdown library such as MDEx. This issue affects earmark from 1.4.1 onward.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
Web页面属性中脚本转义处理不恰当
来源: 美国国家漏洞数据库 NVD
受影响产品
二、漏洞 CVE-2026-48591 的公开POC
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CVE-2026-48591 厂商安全公告 (2)
- 🔗 Stored XSS via unescaped HTML attribute values in earmark | Erlang Ecosystem Foundation CNA 查看完整文章 relatedthird-party-advisory
IV. Related Vulnerabilities
V. Comments for CVE-2026-48591
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