Description
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.
Published: 2026-05-15
Score: 4.4 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Sat, 16 May 2026 01:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 15 May 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Websockets
Websockets ws
Vendors & Products Websockets
Websockets ws

Fri, 15 May 2026 15:15:00 +0000

Type Values Removed Values Added
Description 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.
Title ws: Uninitialized memory disclosure
Weaknesses CWE-908
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-16T01:09:15.903Z

Reserved: 2026-05-13T06:54:34.219Z

Link: CVE-2026-45736

cve-icon Vulnrichment

Updated: 2026-05-16T01:09:07.921Z

cve-icon NVD

Status : Received

Published: 2026-05-15T15:16:54.103

Modified: 2026-05-16T02:16:15.273

Link: CVE-2026-45736

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T16:30:03Z

Weaknesses