FKIE_CVE-2026-45736
Vulnerability from fkie_nvd - Published: 2026-05-15 15:16 - Updated: 2026-07-02 12:17
Severity ?
4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| ws_project | ws | * |
{
"affected": [
{
"affectedData": [
{
"product": "ws",
"vendor": "websockets",
"versions": [
{
"status": "affected",
"version": "\u003e= 8.0.0, \u003c 8.20.1"
}
]
}
],
"source": "security-advisories@github.com"
},
{
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.6::el9"
],
"defaultStatus": "affected",
"product": "Red Hat Ansible Automation Platform 2.6",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhdh:1.9::el9"
],
"defaultStatus": "affected",
"product": "Red Hat Developer Hub 1.9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:discovery:2::el9"
],
"defaultStatus": "affected",
"product": "Red Hat Discovery 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:hummingbird:1"
],
"defaultStatus": "affected",
"product": "Red Hat Hardened Images",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:cryostat:4"
],
"defaultStatus": "affected",
"product": "Cryostat 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:gatekeeper:3"
],
"defaultStatus": "affected",
"product": "Gatekeeper 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhmt:1"
],
"defaultStatus": "affected",
"product": "Migration Toolkit for Containers",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:workload_availability_nhc:0"
],
"defaultStatus": "affected",
"product": "Node HealthCheck Operator",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_lightspeed"
],
"defaultStatus": "affected",
"product": "OpenShift Lightspeed",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_pipelines:1"
],
"defaultStatus": "affected",
"product": "OpenShift Pipelines",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:amq_broker:7"
],
"defaultStatus": "affected",
"product": "Red Hat AMQ Broker 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2"
],
"defaultStatus": "affected",
"product": "Red Hat Ansible Automation Platform 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:apache_camel_hawtio:4"
],
"defaultStatus": "affected",
"product": "Red Hat build of Apache Camel - HawtIO 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:"
],
"defaultStatus": "affected",
"product": "Red Hat Build of Keycloak",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:podman_desktop:1"
],
"defaultStatus": "affected",
"product": "Red Hat Build of Podman Desktop",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:podman_desktop:0"
],
"defaultStatus": "affected",
"product": "Red Hat Build of Podman Desktop - Tech Preview",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:connectivity_link:1"
],
"defaultStatus": "affected",
"product": "Red Hat Connectivity Link 1",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_data_grid:8"
],
"defaultStatus": "affected",
"product": "Red Hat Data Grid 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:8"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux_ai:3"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AI (RHEL AI) 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_ai"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift AI (RHOAI)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_data_foundation:4"
],
"defaultStatus": "affected",
"product": "Red Hat Openshift Data Foundation 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_devspaces:3"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift Dev Spaces",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:container_native_virtualization:4"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift Virtualization 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:quay:3"
],
"defaultStatus": "affected",
"product": "Red Hat Quay 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:satellite:6"
],
"defaultStatus": "affected",
"product": "Red Hat Satellite 6",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1"
],
"defaultStatus": "affected",
"product": "Red Hat Trusted Artifact Signer",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:ansible_portal:2"
],
"defaultStatus": "affected",
"product": "Self-service automation portal 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:service_mesh:2"
],
"defaultStatus": "unaffected",
"product": "OpenShift Service Mesh 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:service_mesh:3"
],
"defaultStatus": "unaffected",
"product": "OpenShift Service Mesh 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:camel_spring_boot:4"
],
"defaultStatus": "unaffected",
"product": "Red Hat build of Apache Camel for Spring Boot 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_fuse:7"
],
"defaultStatus": "unaffected",
"product": "Red Hat Fuse 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8"
],
"defaultStatus": "unaffected",
"product": "Red Hat JBoss Enterprise Application Platform 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jbosseapxp"
],
"defaultStatus": "unaffected",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"vendor": "Red Hat"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
"matchCriteriaId": "110AA5C6-9CD2-4431-BB18-B048FEBD7141",
"versionEndExcluding": "8.20.1",
"versionStartIncluding": "8.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"id": "CVE-2026-45736",
"lastModified": "2026-07-02T12:17:25.417",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 0.7,
"impactScore": 3.6,
"source": "security-advisories@github.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-45736",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-16T01:08:38.777055Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-15T15:16:54.103",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Patch"
],
"url": "https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086"
},
{
"source": "security-advisories@github.com",
"tags": [
"Exploit",
"Patch",
"Vendor Advisory"
],
"url": "https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:26638"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/errata/RHSA-2026:26994"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:27171"
},
{
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},
{
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},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:7655"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://access.redhat.com/security/cve/CVE-2026-45736"
},
{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477914"
},
{
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"tags": [
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],
"url": "https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45736.json"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-908"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
},
{
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"value": "CWE-824"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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