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VULNERABILITIES

CVE-2026-73565 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/honojs/node-server/commit/3a21938c418340e980cb7ffa88e78369f78392d1 [email protected]
https://github.com/honojs/node-server/releases/tag/v2.0.10 [email protected]
https://github.com/honojs/node-server/security/advisories/GHSA-9mqv-5hh9-4cgg [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-401Missing Release of Memory after Effective Lifetime[email protected]
CWE-770Allocation of Resources Without Limits or Throttling[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-73565
NVD Published Date:
Aug 13, 2026
NVD Last Modified:
Sep 10, 2026
Source:
[email protected]
CVE-2026-73565 Details - Not Deferred