MEDIUM 5.3 NVD
CVE-2026-73565
@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 missi
@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.
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
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-13 via NVD.
vulnfeed aggregates 10812 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.