8.5

CVE-2026-17107

Cluster-proxy: cluster-proxy: impersonation header injection in service-proxy grants cluster-admin on every managed cluster

A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes (RHACM) and multicluster-engine (MCE). The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke ServiceAccount holds unrestricted impersonation permissions. An authenticated hub principal can inject an Impersonate-Group header to escalate to cluster-admin on every managed cluster.
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 2.1
Default Statusaffected
Version 1784342329
Version < *
Status unaffected
HerstellerRed Hat
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Produkt multicluster engine for Kubernetes 2.1
Default Statusaffected
Version 1784342329
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.11
Default Statusaffected
Version 1784925025
Version < *
Status unaffected
HerstellerRed Hat
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Produkt multicluster engine for Kubernetes 2.17
Default Statusaffected
Version 1784926298
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.6
Default Statusaffected
Version 1783985960
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.8
Default Statusaffected
Version 1784342329
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt multicluster engine for Kubernetes 2.9.0
Default Statusaffected
Version 1783278220
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 0.35% 0.273
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 8.5 1.8 6
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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-2026-17107
https://bugzilla.redhat.com/show_bug.cgi?id=2506771
https://access.redhat.com/errata/RHSA-2026:46885
https://access.redhat.com/errata/RHSA-2026:47388
https://access.redhat.com/errata/RHSA-2026:47735
https://access.redhat.com/errata/RHSA-2026:47953
https://access.redhat.com/errata/RHSA-2026:47949
https://access.redhat.com/errata/RHSA-2026:47974
https://access.redhat.com/errata/RHSA-2026:48284