6.3
Medium
CVE-2026-71577 A flaw was found in multicluster-global-hub
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Multicluster Global Hub | Versions not published | |
| Multicluster Global Hub 1.4.9 1788355417 | earliest → < 1788355417 | 1788355417 |
| Multicluster Global Hub 1.7.3 1788372439 | earliest → < 1788372439 | 1788372439 |
| Multicluster Global Hub 1.8.2 1790638386 | earliest → < 1790638386 | 1790638386 |
| Multicluster Global Hub 1.5.8 1789478830 | earliest → < 1789478830 | 1789478830 |
| Multicluster Global Hub 1.6.6 1790085268 | earliest → < 1790085268 | 1790085268 |
References
- RHSA-2026:67516 access.redhat.com
- RHSA-2026:67842 access.redhat.com
- RHSA-2026:68515 access.redhat.com
- RHSA-2026:71597 access.redhat.com
- RHSA-2026:73038 access.redhat.com
- RHSA-2026:73419 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2512514 bugzilla.redhat.com
Timeline
- Published
- Last modified
Other CVEs of Multicluster Global Hub
The 32 CVEs of Multicluster Global Hub →
CVE-2026-110744
A flaw was found in multicluster-global-hub-operator-bundle
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CVE-2026-83550
A flaw was found in postgres-exporter
7.1
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CVE-2026-66792
A flaw was found in the multicloud-operators-subscription component
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CVE-2026-71576
A flaw was found in multicluster-global-hub
8.5
High