ws: Uninitialized memory disclosure
Summary
| CVE | CVE-2026-45736 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-15 15:16:54 UTC |
| Updated | 2026-07-10 12:17:02 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.007450000 probability, percentile 0.504480000 (date 2026-07-12)
Problem Types: CWE-908 | CWE-824 | CWE-908 CWE-908: Use of Uninitialized Resource | CWE-824 Access of Uninitialized Pointer
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 3.1 | [email protected] | Secondary | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 3.1 | CNA | DECLARED | 4.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Ws Project | Ws | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Websockets | Ws | affected >= 8.0.0, < 8.20.1 | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Developer Hub 1.10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Developer Hub 1.9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Discovery 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Dev Spaces 3.29 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Trusted Artifact Signer 1.4 | Not specified | Not specified |
| ADP | Red Hat | Cryostat 4 | Not specified | Not specified |
| ADP | Red Hat | Migration Toolkit For Containers | Not specified | Not specified |
| ADP | Red Hat | Node HealthCheck Operator | Not specified | Not specified |
| ADP | Red Hat | OpenShift Lightspeed | Not specified | Not specified |
| ADP | Red Hat | OpenShift Pipelines | Not specified | Not specified |
| ADP | Red Hat | Red Hat AMQ Broker 7 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Apache Camel - HawtIO 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Keycloak | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Podman Desktop | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Podman Desktop - Tech Preview | Not specified | Not specified |
| ADP | Red Hat | Red Hat Connectivity Link 1 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Data Grid 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI RHEL AI 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Virtualization 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Quay 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Self-service Automation Portal 2 | Not specified | Not specified |
| ADP | Red Hat | Gatekeeper 3 | Not specified | Not specified |
| ADP | Red Hat | OpenShift Service Mesh 2 | Not specified | Not specified |
| ADP | Red Hat | OpenShift Service Mesh 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Apache Camel For Spring Boot 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Fuse 7 | Not specified | Not specified |
| ADP | Red Hat | Red Hat JBoss Enterprise Application Platform 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:37272 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26638 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:34374 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086 | [email protected] | github.com | Patch |
| access.redhat.com/errata/RHSA-2026:36754 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26994 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-45736 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7655 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:29197 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45736.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | github.com | Exploit, Patch, Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:36820 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:27171 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:33574 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-05-15T16:00:55.786Z | Reported to Red Hat. |
| ADP | 2026-05-15T14:53:57.263Z | Made public. |
Solutions
ADP: RHSA-2026:34374: Red Hat Ansible Automation Platform 2.6
ADP: RHSA-2026:36754: Red Hat Developer Hub 1.10
ADP: RHSA-2026:33574: Red Hat Developer Hub 1.9
ADP: RHSA-2026:29197: Red Hat Discovery 2
ADP: RHSA-2026:26638: Red Hat Hardened Images
ADP: RHSA-2026:26994: Red Hat Hardened Images
ADP: RHSA-2026:27171: Red Hat Hardened Images
ADP: RHSA-2026:7655: Red Hat Hardened Images
ADP: RHSA-2026:36820: Red Hat OpenShift Dev Spaces 3.29
ADP: RHSA-2026:37272: Red Hat Trusted Artifact Signer 1.4
There are currently no legacy QID mappings associated with this CVE.