Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers (Red Hat Multicluster Global Hub 1.4.9)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.29 % · percentile 22 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
Description
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.
Weaknesses (CWE)
- CWE-345 — Insufficient Verification of Data Authenticity
References
- https://access.redhat.com/errata/RHSA-2026:67516
- https://access.redhat.com/errata/RHSA-2026:67842
- https://access.redhat.com/errata/RHSA-2026:68515
- https://access.redhat.com/errata/RHSA-2026:71597
- https://access.redhat.com/errata/RHSA-2026:73038
- https://access.redhat.com/errata/RHSA-2026:73419
- https://access.redhat.com/security/cve/CVE-2026-71576
- https://bugzilla.redhat.com/show_bug.cgi?id=2512513
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L | redhat |
| CVSS 3.1 | HIGH 8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-55674
- GCVE · GCVE-0-2026-71576
Affected products
| Product | Versions |
|---|---|
| Red Hat · Multicluster Global Hub 1.4.9 | unaffected 1788355599 < * |
| Red Hat · Multicluster Global Hub 1.5.8 | unaffected 1789515288 < * |
| Red Hat · Multicluster Global Hub 1.6.6 | unaffected 1790086176 < * |
| Red Hat · Multicluster Global Hub 1.7.3 | unaffected 1788377424 < * |
| Red Hat · Multicluster Global Hub 1.8.2 | unaffected 1788359454 < * |
| Red Hat · Multicluster Global Hub 1.8.2 | unaffected 1788359454 < * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |