CVE-2026-45736

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Source
https://cve.org/CVERecord?id=CVE-2026-45736
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45736.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-45736
Aliases
Downstream
Related
Published
2026-05-15T14:53:57.263Z
Modified
2026-06-18T03:57:39.235608164Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
ws: Uninitialized memory disclosure
Details

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

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"