- Discovery document will correctly return the resources for aggregated apiservers that do not implement aggregated disovery ([#115770](https://github.com/kubernetes/kubernetes/pull/115770), [@Jefftree](https://github.com/Jefftree))

- Fix race in alpha aggregated discovery handler
  Yes, discovery document will correctly return the resources for aggregated apiservers that do not implement aggregated disovery ([#115805](https://github.com/kubernetes/kubernetes/pull/115805), [@alexzielenski](https://github.com/alexzielenski)) [SIG API Machinery]

* Support OpenAPI spec aggregation for kube-aggregator ([#46734](https://github.com/kubernetes/kubernetes/pull/46734), [@mbohlool](https://github.com/mbohlool))

  - [Changelog since v1.25.0](#changelog-since-v1250)
  - [Important Security Information](#important-security-information-4)
    - [CVE-2022-3172: Aggregated API server can cause clients to be redirected (SSRF)](#cve-2022-3172-aggregated-api-server-can-cause-clients-to-be-redirected-ssrf)
  - [Changes by Kind](#changes-by-kind-14)
    - [API Change](#api-change-3)
    - [Feature](#feature-13)

  - [Changelog since v1.24.4](#changelog-since-v1244)
  - [Important Security Information](#important-security-information-3)
    - [CVE-2022-3172: Aggregated API server can cause clients to be redirected (SSRF)](#cve-2022-3172-aggregated-api-server-can-cause-clients-to-be-redirected-ssrf)

- The `horizontalpodautoscaling` and `clusterrole-aggregation` controllers now assume the `autoscaling/v1` and `rbac.authorization.k8s.io/v1` APIs are available. If you disable those APIs and do not want to run those controllers, exclude them by passing `--controllers=-horizontalpodautoscaling` or `--controllers=-clusterrole-aggregation` to `kube-controller-manager`. ([#117977](https://github.com/kubernetes/kubernetes/pull/117977), [@liggit...

- NONE ([#124326](https://github.com/kubernetes/kubernetes/pull/124326), [@ritazh](https://github.com/ritazh)) [SIG Auth]
- OpenAPI V2 will no longer publish aggregated apiserver OpenAPI for group-versions not matching the APIService specified group version ([#123625](https://github.com/kubernetes/kubernetes/pull/123625), [@Jefftree](https://github.com/Jefftree)) [SIG API Machinery and Testing]

  // Specifies the output format of the exposed resources, defaults to "1"
  // +optional
  optional k8s.io.apimachinery.pkg.api.resource.Quantity divisor = 3;
}

// ResourceQuota sets aggregate quota restrictions enforced per namespace
message ResourceQuota {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata