7.1

CVE-2026-73266

Clusterclaims-controller: confused deputy: tenant-controlled clusterclaim labels propagated to managedcluster, enabling cross-tenant managedclusterset join

A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can exploit this vulnerability by manipulating ClusterClaim labels. This allows the tenant to force a cluster to join a ManagedClusterSet belonging to another tenant. Such unauthorized access could enable the injection of policies and workloads into other tenants' clusters.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt multicluster engine for Kubernetes 2.10
Default Statusaffected
Version 1787196014
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.11
Default Statusaffected
Version 1787239442
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.17
Default Statusaffected
Version 1786577950
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.6
Default Statusaffected
Version 1787259112
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.8
Default Statusaffected
Version 1787259059
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.9
Default Statusaffected
Version 1787195995
Version < *
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.057
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 7.1 1.8 4.7
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')

The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

https://access.redhat.com/security/cve/CVE-2026-73266
https://bugzilla.redhat.com/show_bug.cgi?id=2514217
https://access.redhat.com/errata/RHSA-2026:59556
https://access.redhat.com/errata/RHSA-2026:59593
https://access.redhat.com/errata/RHSA-2026:59557
https://access.redhat.com/errata/RHSA-2026:59559
https://access.redhat.com/errata/RHSA-2026:59579
https://access.redhat.com/errata/RHSA-2026:59558