CVE-2026-41068: Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix)
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.
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Event History
Frequently Asked Questions
What is the severity of CVE-2026-41068?
CVE-2026-41068 has been assigned a high severity rating due to its potential for cross-namespace read access that bypasses RBAC isolation in Kyverno.
How do I fix CVE-2026-41068?
To fix CVE-2026-41068, update Kyverno to version 1.17.3 or later, which addresses the vulnerability.
Who is affected by CVE-2026-41068?
Users of Kyverno versions up to 1.17.2 are affected by CVE-2026-41068 due to the vulnerability in cross-namespace read access.
What is the impact of CVE-2026-41068?
The impact of CVE-2026-41068 is that it allows unauthorized users to read resources across namespace boundaries, undermining role-based access control.
Is CVE-2026-41068 a result of another vulnerability?
Yes, CVE-2026-41068 is an incomplete fix for CVE-2026-22039, which initially addressed cross-namespace privilege escalation.