漏洞信息
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Vulnerability Title
Stored XSS via unescaped HTML attribute values in earmark
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The earmark library is no longer maintained and has been retired on Hex.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.
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Vulnerability Type
Web页面属性中脚本转义处理不恰当
Vulnerability Title
Dave Thomas Earmark 跨站脚本漏洞
Vulnerability Description
Dave Thomas Earmark是Dave Thomas个人开发者的一款注释管理工具。 Dave Thomas Earmark 1.4.1版本及之后版本存在跨站脚本漏洞,该漏洞源于对Web页面中脚本属性中和不当,通过未转义的HTML属性值容易受到存储型跨站脚本攻击。
CVSS Information
N/A
Vulnerability Type
N/A