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TI-2026-78921 Aliases CVE-2026-110744GHSA-34hq-mjq7-9mgx

Multicluster Global Hub operator has excessive impersonation rights

Priority LOW 34CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-269.

Summary

Red Hat Multicluster Global Hub operator bundle is affected. The operator's role-based access control (RBAC) permissions are overly broad, granting cluster-wide impersonation of any user, group and service account without restriction (CWE-269). An attacker who compromises the operator or obtains its service account credentials can escalate privileges to full administrative control over the cluster.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00366 30th percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatMulticluster Global Hub——No fix listedCNA
  • Multicluster Global Hub VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:/a:redhat:multicluster_globalhub——Red Hat
  • cpe:/a:redhat:multicluster_globalhub Versions — — ·Red Hat

Remediation

The sources list no fixed version for Multicluster Global Hub.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Multicluster Global HubAffected—

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-110744
  2. 2026-10-21 Alias added: GHSA-34hq-mjq7-9mgx
  3. 2026-10-23 Priority changed: MEDIUM → LOW
  4. 2026-10-23 CISA SSVC decision points changed

References

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences