CVE-2026-54523

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...

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...

CVE-2026-54523

Kyverno (a policy engine for cloud native platforms) versions 1.18.0 through 1.18.1 are affected by a namespace-scope validation bypass in the NamespacedMutatingPolicy CEL compiler. The function GenerateResources in pkg/cel/libs/context.go does not reject cross-namespace targets, and the validato...

CVE-2026-54523 Kyverno: NamespacedGeneratingPolicy generator.apply() namespace argument unvalidated -- background controller creates RoleBindings in any namespace including kube-system

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...