{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73565", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-12T20:53:46.381Z", "datePublished": "2026-08-13T17:37:28.579Z", "dateUpdated": "2026-08-13T17:37:28.579Z"}, "containers": {"cna": {"title": "@hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake", "problemTypes": [{"descriptions": [{"cweId": "CWE-401", "lang": "en", "description": "CWE-401: Missing Release of Memory after Effective Lifetime", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/honojs/node-server/security/advisories/GHSA-9mqv-5hh9-4cgg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/honojs/node-server/security/advisories/GHSA-9mqv-5hh9-4cgg"}, {"name": "https://github.com/honojs/node-server/commit/3a21938c418340e980cb7ffa88e78369f78392d1", "tags": ["x_refsource_MISC"], "url": "https://github.com/honojs/node-server/commit/3a21938c418340e980cb7ffa88e78369f78392d1"}, {"name": "https://github.com/honojs/node-server/releases/tag/v2.0.10", "tags": ["x_refsource_MISC"], "url": "https://github.com/honojs/node-server/releases/tag/v2.0.10"}], "affected": [{"vendor": "honojs", "product": "node-server", "versions": [{"version": ">= 2.0.0, < 2.0.10", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-13T17:37:28.579Z"}, "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."}], "source": {"advisory": "GHSA-9mqv-5hh9-4cgg", "discovery": "UNKNOWN"}}}}

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