Kyverno's NamespacedGeneratingPolicy generator.apply() namespace argument unvalidated -- background controller creates RoleBindings in any namespace including kube-system

Summary In Kyverno v1.18.1, a tenant who can create a NamespacedMutatingPolicy in their own namespace can instruct the admission controller to generate resources in any namespace by passing an arbitrary namespace string to the CEL generator.applynamespace, resources function. Details...

EUVD-2026-66561

Kyverno is a policy engine designed for cloud native platform engineering teams. From 1.18.0 until 1.18.2, the NamespacedMutatingPolicy CEL compiler exposes the generator library to matchConditions, allowing a namespace-scoped policy to invoke generator.applynamespace, resources with an arbitrary...

Improper Access Control

github.com/rancher/rancher is vulnerable to Improper Access Control. The vulnerability is due to improper cleanup of roleBindings associated with a user or group when they are removed from a project, allowing former members to continue creating, updating, reading, and deleting namespaces in that...

CVE-2021-36775 Deleting PRTBs associated to a group doesn't cause deletion of corresponding RoleBindings

a Improper Access Control vulnerability in SUSE Rancher allows users to keep privileges that should have been revoked. This issue affects: SUSE Rancher Rancher versions prior to 2.4.18; Rancher versions prior to 2.5.12; Rancher versions prior to 2.6.3...

KubiScan - A Tool To Scan Kubernetes Cluster For Risky Permissions

A tool for scanning Kubernetes cluster for risky permissions in Kubernetes's Role-based access control RBAC authorization model. The tool was published as part of the "Securing Kubernetes Clusters by Eliminating Risky Permissions" research...