CVE record · CVE-2026-17107

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

CVSS 8.5 HighEPSS 0.0057 · 47th percentile

Published by the CVE Program (CNA: redhat) at 24 Jul 2026, 18:56 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	multicluster engine for Kubernetes 2.10 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1784342329 to before * rpm Other versions: affected
Red Hat	multicluster engine for Kubernetes 2.10 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1784342329 to before * rpm Other versions: affected
Red Hat	multicluster engine for Kubernetes 2.11 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1784925025 to before * rpm Other versions: affected
Red Hat	multicluster engine for Kubernetes 2.17 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1784926298 to before * rpm Other versions: affected
Red Hat	multicluster engine for Kubernetes 2.6 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1783985960 to before * rpm Other versions: affected
Red Hat	multicluster engine for Kubernetes 2.8 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1784342329 to before * rpm Other versions: affected
Red Hat	multicluster engine for Kubernetes 2.9 Package name: multicluster-engine/cluster-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1783278220 to before * rpm Other versions: affected

Identifiers: CVE-2026-17107
CNA: redhat
Weakness (CWE): CWE-441
Tags: Red Hat multicluster engine for Kubernetes 2.10
Red Hat multicluster engine for Kubernetes 2.11
Red Hat multicluster engine for Kubernetes 2.17
Red Hat multicluster engine for Kubernetes 2.6
Red Hat multicluster engine for Kubernetes 2.8
Red Hat multicluster engine for Kubernetes 2.9
CWE-441
Published: 24 Jul 2026
Updated: 29 Sept 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.5	High	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0057, the 47th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 24 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:46885 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:47388 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:47735 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:47949 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:47953 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:47974 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:48284 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2026-17107 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2506771 issue-trackingredhat

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.