### SIG CLI

* You can now use the `base64decode` function in kubectl go templates to decode base64-encoded data, such as `kubectl get secret SECRET -o go-template='{{ .data.KEY | base64decode }}'`. ([#60755](https://github.com/kubernetes/kubernetes/pull/60755), [@glb](https://github.com/glb))

- Reverts breaking change to inline AzureFile volumes in v1.18.15-v1.18.17; referenced secrets are now correctly searched for in the same namespace as the pod as in previous releases. ([#100397](https://github.com/kubernetes/kubernetes/pull/100397), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider and Storage]

### CVE-2023-2728: Bypassing enforce mountable secrets policy imposed by the ServiceAccount admission plugin

### CVE-2023-2728: Bypassing enforce mountable secrets policy imposed by the ServiceAccount admission plugin

### Secrets
* Populate environment variables from a secrets. ([#39446](https://github.com/kubernetes/kubernetes/pull/39446), [@fraenkel](https://github.com/fraenkel))

### Immutable Secrets and ConfigMaps (beta)

Secret and ConfigMap volumes can be marked as immutable, which significantly reduces load on the API server if there are many Secret and ConfigMap volumes in the cluster.
See [ConfigMap](https://kubernetes.io/docs/concepts/configuration/configmap/) and [Secret](https://kubernetes.io/docs/concepts/configuration/secret/) for more information.

### CSI Proxy for Windows

```
kubectl --namespace=federation get secret federation-apiserver-secret -o json | sed 's/federation-apiserver-secret/federation-apiserver-kubeconfig/g' | kubectl create -f -
# optionally, remove the old secret
kubectl delete secret --namespace=federation federation-apiserver-secret
```

* federation: Adding support for DeleteOptions.OrphanDependents for federated secrets. Setting it to false while deleting a federated secret also deletes the corresponding secrets from all registered clusters. ([#36296](https://github.com/kubernetes/kubernetes/pull/36296), [@nikhiljindal](https://github.com/nikhiljindal))

- Don't prematurely close reflectors in case of slow initialization in watch based manager to fix issues with inability to properly mount secrets/configmaps. ([#104604](https://github.com/kubernetes/kubernetes/pull/104604), [@wojtek-t](https://github.com/wojtek-t))

- kubeadm: Allowed to download certificate secrets uploaded by `init` or `upload-certs` phase, allowing to transfer certificate secrets (certificates and keys) from the cluster to other master machines when creating HA deployments. ([#74168](https://github.com/kubernetes/kubernetes/pull/74168), [@ereslibre](https://github.com/ereslibre))...