Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / multicluster engine for Kubernetes 2.10 | unaffected 1787078272 before * |
| Red Hat / multicluster engine for Kubernetes 2.11 | unaffected 1787078330 before * |
| Red Hat / multicluster engine for Kubernetes 2.17 | unaffected 1786577915 before * |
| Red Hat / multicluster engine for Kubernetes 2.6 | unaffected 1787260779 before * |
| Red Hat / multicluster engine for Kubernetes 2.8 | unaffected 1787259044 before * |
| Red Hat / multicluster engine for Kubernetes 2.9 | unaffected 1787078307 before * |
CWE
CWE-295
References
- https://access.redhat.com/errata/RHSA-2026:59556
- https://access.redhat.com/errata/RHSA-2026:59557
- https://access.redhat.com/errata/RHSA-2026:59558
- https://access.redhat.com/errata/RHSA-2026:59559
- https://access.redhat.com/errata/RHSA-2026:59579
- https://access.redhat.com/errata/RHSA-2026:59593
- https://access.redhat.com/security/cve/CVE-2026-66795
- https://bugzilla.redhat.com/show_bug.cgi?id=2507540
ADP enrichment
No English description supplied.
No references supplied.