CVE-2026-110744: Multicluster-global-hub-operator-bundle: operator serviceaccount granted unrestricted impersonation of users, groups and serviceaccounts cluster-wide

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-21 · updated 2026-10-23
Weakness: CWE-269

Description

A flaw was found in multicluster-global-hub-operator-bundle. The operator is configured with overly broad role-based access control (RBAC) permissions that grant cluster-wide impersonation of arbitrary users, groups, and service accounts without restriction. An attacker who compromises the operator or obtains its service account credentials can exploit this flaw to achieve privilege escalation, gaining full administrative control over the cluster.

References

https://access.redhat.com/security/cve/CVE-2026-110744
https://bugzilla.redhat.com/show_bug.cgi?id=2523007

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