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.

Project Subscriptions

Vendors Products
Websockets Subscribe
Ws Project Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-58qx-3vcg-4xpx ws: Uninitialized memory disclosure
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 19 May 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Ws Project
Ws Project ws
CPEs cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*
Vendors & Products Ws Project
Ws Project ws

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'}


Projects

Sign in to view the affected projects.

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 : Analyzed

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

Modified: 2026-05-19T14:39:20.353

Link: CVE-2026-45736

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses