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VULNERABILITIES

CVE-2026-73266 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:59556 [email protected]
https://access.redhat.com/errata/RHSA-2026:59557 [email protected]
https://access.redhat.com/errata/RHSA-2026:59558 [email protected]
https://access.redhat.com/errata/RHSA-2026:59559 [email protected]
https://access.redhat.com/errata/RHSA-2026:59579 [email protected]

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-441Unintended Proxy or Intermediary ('Confused Deputy')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-73266
NVD Published Date:
Aug 13, 2026
NVD Last Modified:
Sep 8, 2026
Source:
[email protected]
CVE-2026-73266 Details - Not Deferred