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      <title>CVE-2026-32815 — SiYuan: Cross-Origin WebSocket Hijacking via Authentication Bypass — Unauthenticated Information Disclosure</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-32815</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; siyuan-note siyuan&lt;/p&gt;
&lt;p&gt;SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the WebSocket endpoint (/ws) allows unauthenticated connections when specific URL parameters are provided (?app=siyuan&amp;amp;id=auth&amp;amp;type=auth). This bypass, intended for the login page to keep the kernel alive, allows any external client — including malicious websites via cross-origin WebSocket — to connect and receive all server push events in real-time. These events leak sensitive document metadata including document titles, notebook names, file paths, and all CRUD operations performed by authenticated users. Combined with the absence of Origin header validation, a malicious website can silently connect to a victim&amp;#39;s local SiYuan instance and monitor their note-taking activity. This issue has been fixed in version 3.6.1.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; siyuan-note siyuan&lt;/p&gt;
&lt;p&gt;SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the WebSocket endpoint (/ws) allows unauthenticated connections when specific URL parameters are provided (?app=siyuan&amp;amp;id=auth&amp;amp;type=auth). This bypass, intended for the login page to keep the kernel alive, allows any external client — including malicious websites via cross-origin WebSocket — to connect and receive all server push events in real-time. These events leak sensitive document metadata including document titles, notebook names, file paths, and all CRUD operations performed by authenticated users. Combined with the absence of Origin header validation, a malicious website can silently connect to a victim&amp;#39;s local SiYuan instance and monitor their note-taking activity. This issue has been fixed in version 3.6.1.&lt;/p&gt;</content:encoded>
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