CRITICAL 9.1 NVD
CVE-2026-66795
A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval logic improperly validates incoming CSRs, specific
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.
References
- https://access.redhat.com/security/cve/CVE-2026-66795
- https://bugzilla.redhat.com/show_bug.cgi?id=2507540
This critical severity vulnerability with a CVSS score of 9.1 was published on 2026-08-17 via NVD.
Risk Timeline
CVE Disclosed2026-08-17 · 0 days ago
Remediation Resources
Official Advisory
access.redhat.com/security/cve/CVE-2026-66795Analysis & PoC
bugzilla.redhat.com/show_bug.cgi?id=2507540
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