Critical [CVE-2026-66801] shared Kafka gh-spec topic Write ACL plus spoofable CloudEvent source enables fleet-wide cluster-admin from any compromised managed hub
This critical-severity Red Hat Linux advisory covers CVE-2026-66801.
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Summary
shared Kafka gh-spec topic Write ACL plus spoofable CloudEvent source enables fleet-wide cluster-admin from any compromised managed hub. Red Hat rates this critical (CVSS 9.9).
Weakness: CWE-290. Red Hat lists fixing advisory RHSA-2026:52946 with package multicluster-globalhub/multicluster-globalhub-rhel9-operator:1786067967.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- multicluster-globalhub/multicluster-globalhub-rhel9-operator:1786067967
- RHSA-2026:52946
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
Upgrade to a fixed release: multicluster-globalhub/multicluster-globalhub-rhel9-operator:1786067967, RHSA-2026:52946. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Discussion(0)
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