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CVE-2026-41068— Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix)

CVSS 7.7 · High EPSS 0.03% · P10
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I. Basic Information for CVE-2026-41068

Vulnerability Information
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Vulnerability Title
Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix)
Source: NVD (National Vulnerability Database)
Vulnerability Description
Kyverno is a policy engine designed for cloud native platform engineering teams. The patch for CVE-2026-22039 fixed cross-namespace privilege escalation in Kyverno's `apiCall` context by validating the `URLPath` field. However, the ConfigMap context loader has the identical vulnerability — the `configMap.namespace` field accepts any namespace with zero validation, allowing a namespace admin to read ConfigMaps from any namespace using Kyverno's privileged service account. This is a complete RBAC bypass in multi-tenant Kubernetes clusters. An updated fix is available in version 1.17.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Kyverno 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kyverno是Kyverno开源的一个为 Kubernetes 设计的策略引擎。 Kyverno存在安全漏洞，该漏洞源于ConfigMap上下文加载器未验证configMap.namespace字段，可能导致命名空间管理员使用Kyverno的特权服务账户从任何命名空间读取ConfigMap，从而完全绕过RBAC。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
kyvernokyverno < 1.17.2 -

II. Public POCs for CVE-2026-41068

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III. Intelligence Information for CVE-2026-41068

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Same Patch Batch · kyverno · 2026-04-24 · 3 CVEs total

CVE-2026-413238.1 HIGHKyverno: ServiceAccount token leaked to external servers via apiCall service URL
CVE-2026-414857.7 HIGHKyverno Controller Denial of Service via forEach Mutation Panic

IV. Related Vulnerabilities

Same product: kyverno
Same vendor: kyverno
Same weakness: CWE-863

V. Comments for CVE-2026-41068

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