CRITICALVulnerability
CVE-2026-66795
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.
Properties
- severity
- CRITICAL
- score
- 9.9
- epss_score
- 0.00318
- cve_id
- CVE-2026-66795
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- published_at
- 2026-08-17T21:16:47.163
- last_modified
- 2026-09-01T22:17:11.540
- epss_percentile
- 0.24213
Related Entities (3)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Improper Certificate Validation
DESCRIBED_BY (1)
→[Source]NVD
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