CVE-2026-45736 (GCVE-0-2026-45736)

Vulnerability from cvelistv5 – Published: 2026-05-15 14:53 – Updated: 2026-07-03 12:04
VLAI
Title
ws: Uninitialized memory disclosure
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.
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
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-908 - Use of Uninitialized Resource
  • CWE-824 - Access of Uninitialized Pointer
Assigner
References
Impacted products
Vendor Product Version
websockets ws Affected: >= 8.0.0, < 8.20.1
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Red Hat Red Hat Ansible Automation Platform 2.6     cpe:/a:redhat:ansible_automation_platform:2.6::el9
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Red Hat Red Hat Developer Hub 1.9     cpe:/a:redhat:rhdh:1.9::el9
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Red Hat Red Hat Discovery 2     cpe:/a:redhat:discovery:2::el9
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Cryostat 4     cpe:/a:redhat:cryostat:4
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Red Hat Gatekeeper 3     cpe:/a:redhat:gatekeeper:3
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Red Hat Migration Toolkit for Containers     cpe:/a:redhat:rhmt:1
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Red Hat Node HealthCheck Operator     cpe:/a:redhat:workload_availability_nhc:0
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Red Hat OpenShift Lightspeed     cpe:/a:redhat:openshift_lightspeed
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Red Hat OpenShift Pipelines     cpe:/a:redhat:openshift_pipelines:1
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Red Hat Red Hat AMQ Broker 7     cpe:/a:redhat:amq_broker:7
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Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
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Red Hat Red Hat build of Apache Camel - HawtIO 4     cpe:/a:redhat:apache_camel_hawtio:4
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Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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Red Hat Red Hat Build of Podman Desktop     cpe:/a:redhat:podman_desktop:1
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Red Hat Red Hat Build of Podman Desktop - Tech Preview     cpe:/a:redhat:podman_desktop:0
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Red Hat Red Hat Connectivity Link 1     cpe:/a:redhat:connectivity_link:1
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Red Hat Red Hat Data Grid 8     cpe:/a:redhat:jboss_data_grid:8
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3     cpe:/a:redhat:enterprise_linux_ai:3
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Red Hat Red Hat Openshift Data Foundation 4     cpe:/a:redhat:openshift_data_foundation:4
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Red Hat Red Hat OpenShift Dev Spaces     cpe:/a:redhat:openshift_devspaces:3
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Red Hat Red Hat OpenShift Virtualization 4     cpe:/a:redhat:container_native_virtualization:4
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Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
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Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
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Red Hat Red Hat Trusted Artifact Signer     cpe:/a:redhat:trusted_artifact_signer:1
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Red Hat Self-service automation portal 2     cpe:/a:redhat:ansible_portal:2
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Red Hat OpenShift Service Mesh 2     cpe:/a:redhat:service_mesh:2
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Red Hat OpenShift Service Mesh 3     cpe:/a:redhat:service_mesh:3
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Red Hat Red Hat build of Apache Camel for Spring Boot 4     cpe:/a:redhat:camel_spring_boot:4
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Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
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Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
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Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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      "cveMetadata": "{\"cveId\": \"CVE-2026-45736\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-03T12:04:56.039Z\", \"dateReserved\": \"2026-05-13T06:54:34.219Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-05-15T14:53:57.263Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.