{"id":"CVE-2026-73565","revision":"349dedcc0a2b400d940097e602141ad6","records":[{"revision":"349dedcc0a2b400d940097e602141ad6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73565","aliases":[],"title":"@hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake","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":"2026-08-13T17:37:28.579+00:00","modifiedAt":"2026-08-14T16:45:25.711+00:00","affected":[{"ecosystem":"Vendor product","name":"node-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"honojs\",\n                    \"product\": \"node-server\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.0.0, < 2.0.10\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","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/security/advisories/GHSA-9mqv-5hh9-4cgg","https://github.com/honojs/node-server/commit/3a21938c418340e980cb7ffa88e78369f78392d1","https://github.com/honojs/node-server/releases/tag/v2.0.10"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73565","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73565","identifiers":["CVE-2026-73565"]},"retained":false,"historicalAffected":[]}],"coverage":[]}