{"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":"2026-08-14T16:45:25.711Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-14T16:45:01.113756Z","id":"CVE-2026-73565","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-14T16:45:25.711Z"}}]}}