Vulnerability · Published Oct 21, 2026 · Assigned by redhat

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

High 7.2

In plain English

A high-severity privilege mismanagement in Multicluster Global Hub from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.4%top 69.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Red Hat	Multicluster Global Hub	see references

Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://access.redhat.com/security/cve/CVE-2026-110744 vdb-entry, x_refsource_REDHAT
RHBZ#2523007 issue-tracking, x_refsource_REDHAT