CVE-2026-27458— LinkAce: Stored XSS in Atom Feed via CDATA Escape in List Description

LinkAce: Stored XSS in Atom Feed via CDATA Escape in List Description

LinkAce is a self-hosted archive to collect website links. Versions 2.4.2 and below have a Stored Cross-site Scripting vulnerability through the Atom feed endpoint for lists (/lists/feed). An authenticated user can inject a CDATA-breaking payload into a list description that escapes the XML CDATA section, injects a native SVG element into the Atom XML document, and executes arbitrary JavaScript directly in the browser when the feed URL is visited. No RSS reader or additional rendering context is required — the browser's native XML parser processes the injected SVG and fires the onload event handler. This vulnerability exists because the lists feed template outputs list descriptions using Blade's raw syntax ({!! !!}) without sanitization inside a CDATA block. The critical detail is that because the output sits inside <![CDATA[...]]>, an attacker can inject the sequence ]]> to close the CDATA section prematurely, then inject arbitrary XML/SVG elements that the browser parses and executes natively as part of the Atom document. This issue has been fixed in version 2.4.3.

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Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)

LinkAce 安全漏洞

LinkAce是Kevin Woblick个人开发者的一个自托管档案库，用于收集您最喜爱的网站的链接。 LinkAce 2.4.2及之前版本存在安全漏洞，该漏洞源于列表的Atom订阅端点存在存储型跨站脚本，可能导致任意JavaScript执行。

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