Insufficient verification of data authenticity in Red Hat Multicluster Global Hub 1.4.9
Priority LOW 37CWE-345Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-345.
Summary
A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00295 22nd 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 | — | 1788355599 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.5.8 | — | 1789515288 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.6.6 | — | 1790086176 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.7.3 | — | 1788377424 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.8.2 | — | 1788359454 | Patch available | CNA |
| Red Hat | Multicluster Global Hub 1.8.2 | — | 1788359454 | Patch available | CNA |
- Multicluster Global Hub 1.4.9 VendorRed Hat Affected — Fixed in 1788355599 Patch available CNA
- Multicluster Global Hub 1.5.8 VendorRed Hat Affected — Fixed in 1789515288 Patch available CNA
- Multicluster Global Hub 1.6.6 VendorRed Hat Affected — Fixed in 1790086176 Patch available CNA
- Multicluster Global Hub 1.7.3 VendorRed Hat Affected — Fixed in 1788377424 Patch available CNA
- Multicluster Global Hub 1.8.2 VendorRed Hat Affected — Fixed in 1788359454 Patch available CNA
- Multicluster Global Hub 1.8.2 VendorRed Hat Affected — Fixed in 1788359454 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-2026-50145 Insufficiently protected credentials in Red Hat Multicluster Global Hub 1.4.9Priority LOW 28
- 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-2026-50145 Insufficiently protected credentials in Red Hat Multicluster Global Hub 1.4.9Priority LOW 28
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-2026-50145 Insufficiently protected credentials in Red Hat Multicluster Global Hub 1.4.9Priority LOW 28
Vendor assessments
Red Hat
Red Hat rating: Important. 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 |
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-2026-71576
- 2026-10-03 Alias added: GHSA-q5c4-r3vh-f379
References
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Sources
- CVE-2026-71576 · CVE Program
- CVE-2026-71576 · NVD
- FIRST EPSS
- GHSA-q5c4-r3vh-f379 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-71576 · 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