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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Wed, 14 Oct 2026 20:33:03 +0000</lastBuildDate>
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      <title>CVE-2026-43874 — WWBN AVideo: Incomplete Fix for YPTSocket autoEvalCodeOnHTML Strip: Unauthenticated Cross-User JavaScript Execution via…</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-43874</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; WWBN AVideo&lt;/p&gt;
&lt;p&gt;WWBN AVideo is an open source video platform. In versions up to and including 29.0, the server-side mitigation for the YPTSocket autoEvalCodeOnHTML eval sink (from CVE-2026-40911) only strips the payload when it sits under $json[&amp;#39;msg&amp;#39;], but the relay function msgToResourceId() selects the outbound message from $msg[&amp;#39;json&amp;#39;] before $msg[&amp;#39;msg&amp;#39;]. An unauthenticated attacker can obtain a WebSocket token from plugin/YPTSocket/getWebSocket.json.php, connect to the WebSocket server, and send a message with autoEvalCodeOnHTML nested under a top-level json field — the strip branch is skipped, the relay delivers the payload verbatim to any logged-in user identified by to_users_id, and the client script runs it through eval(). Commit 9f3006f9a89a34daa67a83c6ad35f450cb91fcce contains an updated fix.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; WWBN AVideo&lt;/p&gt;
&lt;p&gt;WWBN AVideo is an open source video platform. In versions up to and including 29.0, the server-side mitigation for the YPTSocket autoEvalCodeOnHTML eval sink (from CVE-2026-40911) only strips the payload when it sits under $json[&amp;#39;msg&amp;#39;], but the relay function msgToResourceId() selects the outbound message from $msg[&amp;#39;json&amp;#39;] before $msg[&amp;#39;msg&amp;#39;]. An unauthenticated attacker can obtain a WebSocket token from plugin/YPTSocket/getWebSocket.json.php, connect to the WebSocket server, and send a message with autoEvalCodeOnHTML nested under a top-level json field — the strip branch is skipped, the relay delivers the payload verbatim to any logged-in user identified by to_users_id, and the client script runs it through eval(). Commit 9f3006f9a89a34daa67a83c6ad35f450cb91fcce contains an updated fix.&lt;/p&gt;</content:encoded>
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