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CVE-2026-45736

ws: Uninitialized memory disclosure

Published: May 15, 2026Updated: Aug 5, 2026 Sources: CVE List NVDCWE-908
4.4MEDIUM
NVD MITRE
EPSS Score
0.7%
Top 48.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-908CWE-824

Affected Products

websockets
commercial
wsMixed
Web & CMS Plugins / cms-core
ws project
package-ecosystemaka ws
wsLibrary
OSS Libraries / npm

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Privilege Escalation
View detailed technique mapping

References

https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
github.com
https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086
github.com
https://access.redhat.com/errata/RHSA-2026:26638
access.redhat.com
and 20 more references View all →

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