CVE-2026-66795 - Managedcluster-import-controller: managedcluster-import-controller: csr auto-approver does not validate certificate subject, signername, or requester identity
Brief
CVE ID : CVE-2026-66795
Published : Aug. 17, 2026, 8:45 p. m.
- 22 minutes ago
Description : A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval logic improperly validates incoming CSRs, specifically by not inspecting the signer name or decoding the PEM-encoded x509 CSR. This vulnerability allows a privileged service account on a spoke cluster to submit a malicious CSR.
Successful exploitation can lead to privilege escalation, enabling the attacker to obtain administrative credentials on the hub cluster.
Severity: 9.1
- CRITICAL
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