A flaw was found in Open Cluster Management (OCM), the technology underlying Red Hat Advanced Cluster Management (ACM). Improper validation of Kubernetes client certificate renewal allows a managed c…
高危 CVSS 8.2
摘要
A flaw was found in Open Cluster Management (OCM), the technology underlying Red Hat Advanced Cluster Management (ACM). Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This enables cross-cluster privilege escalation and may allow an attacker to gain control over other managed clusters, including the hub cluster.
中文摘要建设中,暂以英文摘要呈现(DR-003 v2)。
深度研判 · 自动通道
该漏洞尚未生成深度研判报告(DR-003 v2 AI pipeline 建设中)。
受影响产品
- :
Lint 边界警告 (1)
以下是本次研判 lint 阶段发现的非阻塞性警告(如引用 URL 未在白名单内)。这些不影响漏洞条目可用性,仅为透明度披露(参 DR-002)。
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REF_URL_NOT_ALLOWLISTEDurl not in allowlist: https://blog.arfevrier.fr/open-cluster-management-cross-cluster-escape/
数据来源
- NVD DATABASE
原始链接
- https://access.redhat.com/security/cve/CVE-2026-4740 Vendor Advisory
- https://blog.arfevrier.fr/open-cluster-management-cross-cluster-escape/ Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=2450590 Issue Tracking
- https://access.redhat.com/security/cve/CVE-2026-4740 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2450590 Issue Tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4740.json
时间线
- nvd_ingest NVD