docs: forbidden node labels and annotations. Version restrictions

projectcapsule · Oct 28, 2021 · 03819a0 · 03819a0
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diff --git a/docs/operator/use-cases/node-labels-and-annotations.md b/docs/operator/use-cases/node-labels-and-annotations.md
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 # Denying specific user-defined labels or annotations on Nodes
 
+**Important note**
+
+Due to [CVE-2021-25735](https://github.com/kubernetes/kubernetes/issues/100096) this feature is only supported for Kubernetes version older than:
+* v1.18.18
+* v1.19.10
+* v1.20.6
+* v1.21.0
+
 When using `capsule` together with [capsule-proxy](https://github.com/clastix/capsule-proxy), Bill can allow Tenant Owners to [modify Nodes](../../proxy/overview.md).
 
 By default, it will allow tenant owners to add and modify any label or annotation on their nodes.