CVE-2026-110744 Red Hat CVE debrief

Who should care

Operators and administrators of Multicluster Global Hub should assess exposure and verify the configuration of role-based access control (RBAC) permissions to prevent potential privilege escalation.

Why it matters

CVE-2026-110744 is a high-severity vulnerability in multicluster-global-hub-operator-bundle that allows for cluster-wide impersonation of arbitrary users, groups, and service accounts. Operators and administrators should assess exposure and verify RBAC permissions to prevent potential privilege escalation.

• Potential privilege escalation to gain full administrative control over the cluster.
• Need to verify the configuration of role-based access control (RBAC) permissions.
• Possible exploitation attempts to impersonate arbitrary users, groups, and service accounts.

Technical summary

The multicluster-global-hub-operator-bundle has a flaw that allows for cluster-wide impersonation of arbitrary users, groups, and service accounts without restriction due to overly broad RBAC permissions. This vulnerability allows for potential privilege escalation, gaining full administrative control over the cluster. The affected product context suggests that operators and administrators of Multicluster Global Hub should assess exposure and verify the configuration of role-based access control (RBAC) permissions.

Defensive priority

Operators and administrators of Multicluster Global Hub should assess exposure and verify the configuration of role-based access control (RBAC) permissions to prevent potential privilege escalation.

Recommended defensive actions

• Review and restrict RBAC permissions for the operator to prevent cluster-wide impersonation.
• Verify the configuration of role-based access control (RBAC) permissions.
• Monitor for potential exploitation attempts.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information about the vulnerability. The source item from cve_program_cvelist_v5 offers additional context. Evidence limits suggest verifying the configuration of role-based access control (RBAC) permissions. Defenders should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.