CVE-2026-45736

4.4 MEDIUM
Published: May 15, 2026 Modified: May 19, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086
Source: security-advisories@github.com
Patch
https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
Source: security-advisories@github.com
Exploit Patch Vendor Advisory
https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Patch Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
4.4 / 10.0
EPSS (Exploit Probability)
0.5%
37th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-908

Affected Vendors

ws_project

Related CVEs

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