FKIE_CVE-2026-16242
Vulnerability from fkie_nvd - Published: 2026-07-20 08:16 - Updated: 2026-09-14 15:17
Severity
Summary
A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
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"product": "multicluster engine for Kubernetes 2.1",
"vendor": "Red Hat",
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"cpes": [
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"packageName": "multicluster-engine/hypershift-rhel9-operator",
"product": "multicluster engine for Kubernetes 2.11",
"vendor": "Red Hat",
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]
},
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],
"defaultStatus": "affected",
"packageName": "multicluster-engine/hypershift-rhel9-operator",
"product": "multicluster engine for Kubernetes 2.17",
"vendor": "Red Hat",
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"version": "1784856942",
"versionType": "rpm"
}
]
},
{
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],
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"packageName": "multicluster-engine/hypershift-rhel9-operator",
"product": "multicluster engine for Kubernetes 2.6",
"vendor": "Red Hat",
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{
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"version": "1784905804",
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}
]
},
{
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"cpes": [
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],
"defaultStatus": "affected",
"packageName": "multicluster-engine/hypershift-rhel9-operator",
"product": "multicluster engine for Kubernetes 2.8",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1784905783",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.9::el9"
],
"defaultStatus": "affected",
"packageName": "multicluster-engine/hypershift-rhel9-operator",
"product": "multicluster engine for Kubernetes 2.9",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1784905769",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:openshift:4.14::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel8",
"product": "Red Hat OpenShift Container Platform 4.14",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1787001690",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:openshift:4.15::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.15",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1787055132",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:openshift:4.16::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.16",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1785534428",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:openshift:4.17::el9"
],
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"product": "Red Hat OpenShift Container Platform 4.17",
"vendor": "Red Hat",
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{
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"version": "1784914869",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:openshift:4.18::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.18",
"vendor": "Red Hat",
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{
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"version": "1784912882",
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}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:openshift:4.19::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.19",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1784913720",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:openshift:4.20::el9"
],
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"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.20",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1785288843",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:openshift:4.21::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.21",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "1785301941",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:openshift:4.22::el9"
],
"defaultStatus": "affected",
"packageName": "openshift4/ose-hypershift-rhel9",
"product": "Red Hat OpenShift Container Platform 4.22",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1785192936",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:logging:6"
],
"defaultStatus": "unaffected",
"packageName": "openshift-logging/cluster-logging-rhel9-operator",
"product": "Logging Subsystem for Red Hat OpenShift",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:multicluster_engine"
],
"defaultStatus": "unaffected",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:multicluster_engine"
],
"defaultStatus": "unaffected",
"packageName": "multicluster-engine/hypershift-addon-rhel9-operator",
"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:multicluster_engine"
],
"defaultStatus": "unaffected",
"packageName": "multicluster-engine/hypershift-cli-rhel9",
"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:multicluster_engine"
],
"defaultStatus": "unaffected",
"packageName": "multicluster-engine/managedcluster-import-controller-rhel9",
"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift_api_data_protection:1"
],
"defaultStatus": "unaffected",
"packageName": "oadp/oadp-hypershift-velero-plugin-rhel9",
"product": "OpenShift API for Data Protection",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift_api_data_protection:1"
],
"defaultStatus": "unaffected",
"packageName": "oadp/oadp-rhel9-operator",
"product": "OpenShift API for Data Protection",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/acm-multicluster-observability-addon-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/acm-must-gather-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/endpoint-monitoring-rhel9-operator",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/grafana-dashboard-loader-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/metrics-collector-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/multicluster-observability-rhel9-operator",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "unaffected",
"packageName": "rhacm2/rbac-query-proxy-rhel9",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-aws-ebs-csi-driver-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-aws-efs-csi-driver-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-azure-disk-csi-driver-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-azure-file-csi-driver-operator-rhel9",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-cluster-csi-snapshot-controller-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-cluster-network-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-cluster-network-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-cluster-node-tuning-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-cluster-storage-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-csi-driver-manila-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-openstack-cinder-csi-driver-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-powervs-block-csi-driver-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "openshift4/ose-smb-csi-driver-rhel9-operator",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
}
],
"source": "secalert@redhat.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic."
}
],
"id": "CVE-2026-16242",
"lastModified": "2026-09-14T15:17:04.540",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.5,
"source": "secalert@redhat.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-16242",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-21T14:56:23.371685Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-20T08:16:29.833",
"references": [
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:46885"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:47388"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:47728"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:47735"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:47949"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:47953"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:47974"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:48284"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:48657"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:48670"
},
{
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},
{
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},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:48699"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:50758"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:56789"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:56912"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/security/cve/CVE-2026-16242"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502690"
},
{
"source": "secalert@redhat.com",
"url": "https://github.com/openshift/hypershift/pull/9031"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-306"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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