Improper privilege management in Red Hat multicluster engine for Kubernetes 2.10
Priority MEDIUM 44CWE-269Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-269.
Summary
A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00561 46th percentileScored 2026-11-07
Fix Fixed Red Hat: 6 advisories
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 | — | 1787201612 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.11 | — | 1787238383 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.17 | — | 1786750700 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.6 | — | 1787264185 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.8 | — | 1787259011 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.9 | — | 1787201646 | Patch available | CNA |
- multicluster engine for Kubernetes 2.10 VendorRed Hat Affected — Fixed in 1787201612 Patch available CNA
- multicluster engine for Kubernetes 2.11 VendorRed Hat Affected — Fixed in 1787238383 Patch available CNA
- multicluster engine for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1786750700 Patch available CNA
- multicluster engine for Kubernetes 2.6 VendorRed Hat Affected — Fixed in 1787264185 Patch available CNA
- multicluster engine for Kubernetes 2.8 VendorRed Hat Affected — Fixed in 1787259011 Patch available CNA
- multicluster engine for Kubernetes 2.9 VendorRed Hat Affected — Fixed in 1787201646 Patch available CNA
CPE names CNA · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:multicluster_engine:2.10::el9 | 2.10 | — | Red Hat |
| cpe:/a:redhat:multicluster_engine:2.11::el9 | 2.11 | — | Red Hat |
| cpe:/a:redhat:multicluster_engine:2.17::el9 | 2.17 | — | Red Hat |
| cpe:/a:redhat:multicluster_engine:2.6::el9 | 2.6 | — | Red Hat |
| cpe:/a:redhat:multicluster_engine:2.8::el9 | 2.8 | — | Red Hat |
| cpe:/a:redhat:multicluster_engine:2.9::el9 | 2.9 | — | Red Hat |
- cpe:/a:redhat:multicluster_engine:2.10::el9 Versions 2.10 — ·Red Hat
- cpe:/a:redhat:multicluster_engine:2.11::el9 Versions 2.11 — ·Red Hat
- cpe:/a:redhat:multicluster_engine:2.17::el9 Versions 2.17 — ·Red Hat
- cpe:/a:redhat:multicluster_engine:2.6::el9 Versions 2.6 — ·Red Hat
- cpe:/a:redhat:multicluster_engine:2.8::el9 Versions 2.8 — ·Red Hat
- cpe:/a:redhat:multicluster_engine:2.9::el9 Versions 2.9 — ·Red Hat
Remediation
Red Hat 6 advisories
- RHSA-2026:59593 Released 2026-08-25 · Red Hat rating Importantmulticluster engine for Kubernetes v2.17.2 security update
- multicluster engine for Kubernetes 2.17 registry.redhat.io/multicluster-engine/cluster-api-provider-kubevirt-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +6
- RHSA-2026:59579 Released 2026-08-25 · Red Hat rating Importantmulticluster engine for Kubernetes v2.6.14 security update
- multicluster engine for Kubernetes 2.6 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +17
- RHSA-2026:59559 Released 2026-08-25 · Red Hat rating Importantmulticluster engine for Kubernetes v2.9.7 security update
- multicluster engine for Kubernetes 2.9 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +15
Show 3 more Red Hat advisories
- RHSA-2026:59558 Released 2026-08-25 · Red Hat rating Importantmulticluster engine for Kubernetes v2.8.10 security update
- multicluster engine for Kubernetes 2.8 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/backplane-rhel9-operator, registry.redhat.io/multicluster-engine/cluster-api-provider-agent-rhel9 +20
- RHSA-2026:59557 Released 2026-08-25 · Red Hat rating Importantmulticluster engine for Kubernetes v2.10.6 security update
- multicluster engine for Kubernetes 2.10 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +16
- RHSA-2026:59556 Released 2026-08-25 · Red Hat rating Importantmulticluster engine for Kubernetes v2.11.6 security update
- multicluster engine for Kubernetes 2.11 registry.redhat.io/multicluster-engine/addon-manager-rhel9, registry.redhat.io/multicluster-engine/cluster-curator-controller-rhel9, registry.redhat.io/multicluster-engine/cluster-image-set-controller-rhel9 +14
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| multicluster engine for Kubernetes 2.10 | Fixed | RHSA-2026:59557 |
| multicluster engine for Kubernetes 2.11 | Fixed | RHSA-2026:59556 |
| multicluster engine for Kubernetes 2.17 | Fixed | RHSA-2026:59593 |
| multicluster engine for Kubernetes 2.6 | Fixed | RHSA-2026:59579 |
| multicluster engine for Kubernetes 2.8 | Fixed | RHSA-2026:59558 |
| multicluster engine for Kubernetes 2.9 | Fixed | RHSA-2026:59559 |
Not affected: 6 products
- multicluster engine for Kubernetes 2.10
- multicluster engine for Kubernetes 2.11
- multicluster engine for Kubernetes 2.17
- multicluster engine for Kubernetes 2.6
- multicluster engine for Kubernetes 2.8
- multicluster engine for Kubernetes 2.9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73269
- 2026-10-03 Alias added: GHSA-h2w9-5qx3-frqq
References
More Red Hat vulnerabilities
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Sources
- CVE-2026-73269 · CVE Program
- CVE-2026-73269 · NVD
- FIRST EPSS
- GHSA-h2w9-5qx3-frqq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-73269 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences