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      <title>CVE-2026-73565 — @hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-73565</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; honojs node-server&lt;/p&gt;
&lt;p&gt;@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.0.10, a WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header causes src/websocket.ts to retain the request&amp;#39;s IncomingMessage in waiterMap and leave waitForWebSocket pending because ws.handleUpgrade emits no connection event. The aborted handshake therefore has no cleanup path, allowing an unauthenticated attacker to flood a public route, cause unbounded memory growth, and eventually make the service unavailable. This issue is fixed in version 2.0.10.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; honojs node-server&lt;/p&gt;
&lt;p&gt;@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.0.10, a WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header causes src/websocket.ts to retain the request&amp;#39;s IncomingMessage in waiterMap and leave waitForWebSocket pending because ws.handleUpgrade emits no connection event. The aborted handshake therefore has no cleanup path, allowing an unauthenticated attacker to flood a public route, cause unbounded memory growth, and eventually make the service unavailable. This issue is fixed in version 2.0.10.&lt;/p&gt;</content:encoded>
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