CVEvulnerability

CVE-2026-66795

9.9 CRITICAL Published 2026-08-17 Modified 2026-09-29 Official page ↗
Status
Awaiting Analysis
Published
2026-08-17
Last modified
2026-09-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.9 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-295

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.

Related

Weakness · CWE (1)

  • CWE-295 Improper Certificate Validation weakness

References