Insufficiently protected credentials in Red Hat Multicluster Global Hub 1.4.9
Priority LOW 28CWE-522Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- 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-522.
Summary
A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens intended for other hubs. These tokens have an extended validity of approximately 9.86 years, significantly increasing the risk of unauthorized access and information disclosure to other managed clusters.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00423 36th 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 Global Hub 1.4.9 | — | 1788355417 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.5.8 | — | 1789478830 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.6.6 | — | 1790085268 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.7.3 | — | 1788372439 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.8.2 | — | 1788359461 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.8.2 | — | 1790638386 | Patch available | CNA |
- Multicluster Global Hub 1.4.9 VendorRed Hat Affected — Fixed in 1788355417 Patch available CNA
- Multicluster Global Hub 1.5.8 VendorRed Hat Affected — Fixed in 1789478830 Patch available CNA
- Multicluster Global Hub 1.6.6 VendorRed Hat Affected — Fixed in 1790085268 Patch available CNA
- Multicluster Global Hub 1.7.3 VendorRed Hat Affected — Fixed in 1788372439 Patch available CNA
- Multicluster Global Hub 1.8.2 VendorRed Hat Affected — Fixed in 1788359461 Patch available CNA
- Multicluster Global Hub 1.8.2 VendorRed Hat Affected — Fixed in 1790638386 Patch available CNA
CPE names CNA · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:multicluster_globalhub:1.4::el9 | 1.4 | — | Red Hat |
| cpe:/a:redhat:multicluster_globalhub:1.5::el9 | 1.5 | — | Red Hat |
| cpe:/a:redhat:multicluster_globalhub:1.6::el9 | 1.6 | — | Red Hat |
| cpe:/a:redhat:multicluster_globalhub:1.7::el9 | 1.7 | — | Red Hat |
| cpe:/a:redhat:multicluster_globalhub:1.8::el9 | 1.8 | — | Red Hat |
- cpe:/a:redhat:multicluster_globalhub:1.4::el9 Versions 1.4 — ·Red Hat
- cpe:/a:redhat:multicluster_globalhub:1.5::el9 Versions 1.5 — ·Red Hat
- cpe:/a:redhat:multicluster_globalhub:1.6::el9 Versions 1.6 — ·Red Hat
- cpe:/a:redhat:multicluster_globalhub:1.7::el9 Versions 1.7 — ·Red Hat
- cpe:/a:redhat:multicluster_globalhub:1.8::el9 Versions 1.8 — ·Red Hat
Remediation
Red Hat 6 advisories
- RHSA-2026:73419 Released 2026-09-29 · Red Hat rating ImportantMulticluster Global Hub 1.6.6 security update
- Multicluster Global Hub 1.6.6 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +2
- RHSA-2026:73038 Released 2026-09-29 · Red Hat rating ImportantMulticluster Global Hub 1.8.2 security update
- Multicluster Global Hub 1.8.2 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +2
- RHSA-2026:71597 Released 2026-09-24 · Red Hat rating ImportantMulticluster Global Hub 1.5.8 security update
- Multicluster Global Hub 1.5.8 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +2
Show 3 more Red Hat advisories
- RHSA-2026:68515 Released 2026-09-17 · Red Hat rating ImportantMulticluster Global Hub 1.8.2 security update
- Multicluster Global Hub 1.8.2 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +2
- RHSA-2026:67842 Released 2026-09-16 · Red Hat rating ImportantMulticluster Global Hub 1.7.3 security update
- Multicluster Global Hub 1.7.4 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +2
- RHSA-2026:67516 Released 2026-09-15 · Red Hat rating ImportantMulticluster Global Hub 1.4.9 security update
- Multicluster Global Hub 1.4.9 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Red Hat Multicluster Global Hub 1.4.9, Multicluster Global Hub 1.5.8 and 3 more products — RHSA-2026:67842
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-50144 Insufficient verification of data authenticity in Red Hat Multicluster Global Hub 1.4.9Priority LOW 37
- Advisory ·
Red Hat Multicluster Global Hub 1.4.9, Multicluster Global Hub 1.5.8 and 3 more products — RHSA-2026:68515
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-50144 Insufficient verification of data authenticity in Red Hat Multicluster Global Hub 1.4.9Priority LOW 37
Show 1 more group
- Advisory ·
Red Hat Multicluster Global Hub 1.4.9, Multicluster Global Hub 1.5.8 and 3 more products — RHSA-2026:73038
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-50144 Insufficient verification of data authenticity in Red Hat Multicluster Global Hub 1.4.9Priority LOW 37
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Multicluster Global Hub 1.4.9 | Fixed | RHSA-2026:67516 |
| Multicluster Global Hub 1.5.8 | Fixed | RHSA-2026:71597 |
| Multicluster Global Hub 1.6.6 | Fixed | RHSA-2026:73419 |
| Multicluster Global Hub 1.7.3 | Fixed | RHSA-2026:67842 |
| Multicluster Global Hub 1.8.2 | Fixed | RHSA-2026:68515, RHSA-2026:73038 |
Not affected: 5 products
- Multicluster Global Hub 1.4.9
- Multicluster Global Hub 1.5.8
- Multicluster Global Hub 1.6.6
- Multicluster Global Hub 1.7.3
- Multicluster Global Hub 1.8.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-71577
- 2026-10-03 Alias added: GHSA-v7q5-q7p3-9vjm
References
More Red Hat vulnerabilities
- 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
Sources
- CVE-2026-71577 · CVE Program
- CVE-2026-71577 · NVD
- FIRST EPSS
- GHSA-v7q5-q7p3-9vjm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-71577 · 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