{"id":"CVE-2026-73565","sourceIdentifier":"security-advisories@github.com","published":"2026-08-13T18:18:19.103","lastModified":"2026-10-24T15:10:00.190","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"@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'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."},{"lang":"es","value":"@hono/node-server permite ejecutar la aplicación Hono en Node.js. Desde la 2.0.0 hasta la 2.0.10, una solicitud de actualización de WebSocket a una ruta upgradeWebSocket con un encabezado Sec-WebSocket-Key faltante o malformado hace que src/websocket.ts retenga el IncomingMessage de la solicitud en waiterMap y deje waitForWebSocket pendiente porque ws.handleUpgrade no emite ningún evento de conexión. El handshake abortado, por lo tanto, no tiene una ruta de limpieza, lo que permite a un atacante no autenticado inundar una ruta pública, causar un crecimiento de memoria ilimitado y, finalmente, dejar el servicio no disponible. Este problema está solucionado en la versión 2.0.10."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"honojs","product":"node-server","versions":[{"version":">= 2.0.0, < 2.0.10","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-14T16:45:01.113756Z","id":"CVE-2026-73565","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-401"},{"lang":"en","value":"CWE-770"}]}],"references":[{"url":"https://github.com/honojs/node-server/commit/3a21938c418340e980cb7ffa88e78369f78392d1","source":"security-advisories@github.com"},{"url":"https://github.com/honojs/node-server/releases/tag/v2.0.10","source":"security-advisories@github.com"},{"url":"https://github.com/honojs/node-server/security/advisories/GHSA-9mqv-5hh9-4cgg","source":"security-advisories@github.com"}]}