CVE-2026-71577: Insufficiently Protected Credentials in Red Hat Multicluster Global Hub
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.
CVE-2026-71577: Insufficiently Protected Credentials in Red Hat 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.
CVSS v3.1
Score 6.3medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-08-07T14:20:37.114Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-71577","vendor":"Red Hat"}]
Threat ID: 6a7a02d3bf8831d53930c688
Added to database: 08/10/2026, 16:56:51 UTC
Last updated: 08/10/2026, 17:05:35 UTC
Views: 4
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