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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
Impact:
The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service.
Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint.
All releases starting at undici 6.17.0 are affected.
Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds:
No workaround is available. The fix must be applied through an upgrade.
Metrics
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[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Cluster Observability Operator 1.5.0","defaultStatus":"affected","cpes":["cpe:/a:redhat:cluster_observability_operator:1.5::el9"]},{"vendor":"Red Hat","product":"Cryostat 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","defaultStatus":"affected","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","defaultStatus":"affected","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_devspaces:3"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]}]
[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 9)","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream"]},{"vendor":"Red Hat","product":"Cluster Observability Operator 1.5.0","defaultStatus":"affected","cpes":["cpe:/a:redhat:cluster_observability_operator:1.5::el9"]},{"vendor":"Red Hat","product":"Cryostat 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","defaultStatus":"affected","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","defaultStatus":"affected","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_devspaces:3"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]}]
CVE Modified by redhat-SADP7/06/2026 9:16:31 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2026:35841
Added
Reference
https://access.redhat.com/errata/RHSA-2026:35842
Changed
Affected
[{"vendor":"Red Hat","product":"Cluster Observability Operator 1.5.0","defaultStatus":"affected","cpes":["cpe:/a:redhat:cluster_observability_operator:1.5::el9"]},{"vendor":"Red Hat","product":"Cryostat 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","defaultStatus":"affected","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","defaultStatus":"affected","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_devspaces:3"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]}]
[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Cluster Observability Operator 1.5.0","defaultStatus":"affected","cpes":["cpe:/a:redhat:cluster_observability_operator:1.5::el9"]},{"vendor":"Red Hat","product":"Cryostat 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","defaultStatus":"affected","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","defaultStatus":"affected","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_devspaces:3"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]}]
CVE Modified by redhat-SADP7/02/2026 8:16:55 AM
Action
Type
Old Value
New Value
Added
Reference
https://access.redhat.com/errata/RHSA-2026:34342
Changed
Affected
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[{"vendor":"Red Hat","product":"Cryostat 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","defaultStatus":"affected","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","defaultStatus":"affected","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_devspaces:3"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]}]
Initial Analysis by NIST6/25/2026 1:47:33 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* versions from (including) 8.0.0 up to (excluding) 8.5.0
*cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* versions from (including) 7.0.0 up to (excluding) 7.28.0
*cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* versions from (including) 6.17.0 up to (excluding) 6.27.0
Impact:
The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service.
Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint.
All releases starting at undici 6.17.0 are affected.
Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds:
No workaround is available. The fix must be applied through an upgrade.
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