Authorization bypass in Red Hat multicluster engine for Kubernetes 2.10
Priority LOW 26CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-639.
Summary
A flaw was found in the provider-credential-controller component of multicluster-engine (MCE). An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipulating `copiedFrom` labels, the attacker could intercept newly rotated provider credentials, leading to unauthorized information disclosure. This allows access to sensitive credentials that should otherwise be protected.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00399 34th 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
- Partial
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 | — | 1787176886 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.11 | — | 1787239595 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.17 | — | 1786664288 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.6 | — | 1787260821 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.8 | — | 1787259099 | Patch available | CNA |
| Red Hat | multicluster engine for Kubernetes 2.9 | — | 1787176716 | Patch available | CNA |
- multicluster engine for Kubernetes 2.10 VendorRed Hat Affected — Fixed in 1787176886 Patch available CNA
- multicluster engine for Kubernetes 2.11 VendorRed Hat Affected — Fixed in 1787239595 Patch available CNA
- multicluster engine for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1786664288 Patch available CNA
- multicluster engine for Kubernetes 2.6 VendorRed Hat Affected — Fixed in 1787260821 Patch available CNA
- multicluster engine for Kubernetes 2.8 VendorRed Hat Affected — Fixed in 1787259099 Patch available CNA
- multicluster engine for Kubernetes 2.9 VendorRed Hat Affected — Fixed in 1787176716 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-2026-19130
- 2026-10-03 Alias added: GHSA-3vwx-g7ch-f3wg
References
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Sources
- CVE-2026-19130 · CVE Program
- CVE-2026-19130 · NVD
- FIRST EPSS
- GHSA-3vwx-g7ch-f3wg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-19130 · 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