CVE-2026-45736

ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-908"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45736.json"
}

References

Affected packages

Git / github.com/websockets/ws

Affected ranges

Type

GIT

Repo

https://github.com/websockets/ws

Events

Introduced

fc4024898c0da9b587c50a4a2d02d3ff88cddf06

Fixed

5d9b316230ea931532a6671cc450f18c11edd02f

Fixed

c0327ec15a54d701eb6ccefaa8bef328cfc03086

Database specific

Show details

{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
            "range": [
                {
                    "introduced": "8.0.0"
                },
                {
                    "fixed": "8.20.1"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "c0327ec15a54d701eb6ccefaa8bef328cfc03086"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

8.*

8.0.0

8.1.0

8.10.0

8.11.0

8.12.0

8.12.1

8.13.0

8.14.0

8.14.1

8.14.2

8.15.0

8.15.1

8.16.0

8.17.0

8.17.1

8.18.0

8.18.1

8.18.2

8.18.3

8.19.0

8.2.0

8.2.1

8.2.2

8.2.3

8.20.0

8.3.0

8.4.0

8.4.1

8.4.2

8.5.0

8.6.0

8.7.0

8.8.0

8.8.1

8.9.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45736.json"