CVE-2026-71577 (GCVE-0-2026-71577)

Vulnerability from cvelistv5 – Published: 2026-08-10 16:43 – Updated: 2026-09-29 17:21
VLAI
Title
Multicluster-global-hub: multicluster-global-hub: spec-topic read acl leaks bootstrap kubeconfigs to all managed hubs during migration
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 01:59 UTC
CWE
  • CWE-522 - Insufficiently Protected Credentials
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1082 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:67516 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:67842 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:68515 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71597 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:73038 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:73419 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-71577 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2512514 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Multicluster Global Hub 1.4.9 Unaffected: 1788355417 , < * (rpm)
    cpe:/a:redhat:multicluster_globalhub:1.4::el9
Create a notification for this product.
Red Hat Multicluster Global Hub 1.5.8 Unaffected: 1789478830 , < * (rpm)
    cpe:/a:redhat:multicluster_globalhub:1.5::el9
Create a notification for this product.
Red Hat Multicluster Global Hub 1.6.6 Unaffected: 1790085268 , < * (rpm)
    cpe:/a:redhat:multicluster_globalhub:1.6::el9
Create a notification for this product.
Red Hat Multicluster Global Hub 1.7.3 Unaffected: 1788372439 , < * (rpm)
    cpe:/a:redhat:multicluster_globalhub:1.7::el9
Create a notification for this product.
Red Hat Multicluster Global Hub 1.8.2 Unaffected: 1788359461 , < * (rpm)
    cpe:/a:redhat:multicluster_globalhub:1.8::el9
Create a notification for this product.
Red Hat Multicluster Global Hub 1.8.2 Unaffected: 1790638386 , < * (rpm)
    cpe:/a:redhat:multicluster_globalhub:1.8::el9
Create a notification for this product.
Date Public
2026-08-10 14:38
Show details on NVD website

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}



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