{"id":"CVE-2026-73565","revision":"882b2150428746a19b5c72a97a2412e2","records":[{"revision":"882b2150428746a19b5c72a97a2412e2","observedAt":"2026-10-25T15:19:09.409+00:00","statement":{"source":"nvd","id":"CVE-2026-73565","aliases":[],"title":"@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 r…","description":"@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.","state":0,"publishedAt":"2026-08-13T18:18:19.103+00:00","modifiedAt":"2026-10-24T15:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/honojs/node-server/commit/3a21938c418340e980cb7ffa88e78369f78392d1","https://github.com/honojs/node-server/releases/tag/v2.0.10","https://github.com/honojs/node-server/security/advisories/GHSA-9mqv-5hh9-4cgg"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73565","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-401","CWE-770"],"productCriteria":[],"sourceDates":{"published":"2026-08-13T18:18:19.103","lastModified":"2026-10-24T15:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-73565","identifiers":["CVE-2026-73565"]},"retained":false,"historicalAffected":[]}],"coverage":[]}