CVE-2026-73565

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Source
https://cve.org/CVERecord?id=CVE-2026-73565
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73565.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73565
Aliases
Published
2026-08-13T17:37:28Z
Modified
2026-10-28T02:30:20Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
@hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake
Details

@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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-401",
        "CWE-770"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73565.json"
}
References

Affected packages

Git / github.com/honojs/node-server

Affected ranges

Type
GIT
Repo
https://github.com/honojs/node-server
Events
Introduced
58c9355998b3b202bf7eb22b1505a2d4d847c3b0
Fixed
7c1457ed5536c02fdd2f001129fae67bcbca54a1
Fixed
3a21938c418340e980cb7ffa88e78369f78392d1
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "2.0.0"
                },
                {
                    "fixed":  "2.0.10"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "3a21938c418340e980cb7ffa88e78369f78392d1"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v2.0.10",
            "range":  [
                {
                    "fixed":  "7c1457ed5536c02fdd2f001129fae67bcbca54a1"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v2.*
v2.0.0
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73565.json"