- Default RBAC policy no longer grants access to discovery and permission-checking APIs (used by `kubectl auth can-i`) to *unauthenticated* users. Upgraded clusters preserve prior behavior, but cluster administrators wishing to grant unauthenticated users access in new clusters will need to explicitly opt-in to expose the discovery and/or permission-checking APIs: ([#73807](https://github.com/kubernetes/kubernetes/pull/73807), [@dekkagaijin](https://github.com/dekkagaijin))

    * or grant self-deletion permission explicitly:
        * `kubectl create clusterrole self-deleting-nodes --verb=delete --resource=nodes`

There is no mitigation from this issue.  Cluster admins should take care to secure aggregated API servers and should not grant access to mutate `APIService`s to untrusted parties.

**Affected Versions**:
  - kube-apiserver v1.25.0
  - kube-apiserver v1.24.0 - v1.24.4
  - kube-apiserver v1.23.0 - v1.23.10
  - kube-apiserver v1.22.0 - v1.22.14

#### AWS

- The `system:aws-cloud-provider` cluster role, deprecated in v1.13, is no longer auto-created. Deployments using the AWS cloud provider should grant required permissions to the `aws-cloud-provider` service account in the `kube-system` namespace as part of deployment.  ([#66635](https://github.com/kubernetes/kubernetes/pull/66635), [@wgliang](https://github.com/wgliang))

There is no mitigation from this issue.  Cluster admins should take care to secure aggregated API servers and should not grant access to mutate `APIService`s to untrusted parties.

**Affected Versions**:
  - kube-apiserver v1.25.0
  - kube-apiserver v1.24.0 - v1.24.4
  - kube-apiserver v1.23.0 - v1.23.10

There is no mitigation from this issue.  Cluster admins should take care to secure aggregated API servers and should not grant access to mutate `APIService`s to untrusted parties.

**Affected Versions**:
  - kube-apiserver v1.25.0
  - kube-apiserver v1.24.0 - v1.24.4
  - kube-apiserver v1.23.0 - v1.23.10

- Kube-proxy Windows service...

There is no mitigation from this issue.  Cluster admins should take care to secure aggregated API servers and should not grant access to mutate `APIService`s to untrusted parties.

**Affected Versions**:
  - kube-apiserver v1.25.0
  - kube-apiserver v1.24.0 - v1.24.4
  - kube-apiserver v1.23.0 - v1.23.10

- Consumers of the 'certificatesigningrequests/approval' API must now grant permission to 'approve' CSRs for the 'signerName' specified on the CSR. More information on the new signerName field can be found at https://github.com/kubernetes/enhancements/blob/master/keps/sig-auth/1513-certificate-signing-request/README.md/#signers...