AUGUST 14, 2026
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Case File

CVE-2026-73266

HIGH · CVSS 7.1 EPSS 0.16% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-13 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

A vulnerability exists in the clusterclaims-controller component of the Multicluster Engine, allowing authenticated tenants to manipulate ClusterClaim labels. This exploitation can lead to unauthorized access, enabling one tenant to force a cluster to join another tenant's ManagedClusterSet, potentially injecting malicious policies and workloads. Organizations utilizing Multicluster Engine should prioritize addressing this issue to prevent cross-tenant security breaches.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-73266
Severity
HIGH
CVSS
7.1
EPSS
0.16%

Original NVD 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.