Provide references for CVE-2021-28235.
Where can I find more information about CVE-2021-28235?
References are available at: http://etcd.com, https://github.com/etcd-io/etcd, https://github.com/lucyxss/etcd-3.4.10-test/blob/master/temp4cj.png, https://github.com/lucyxss/etcd-3.4.10-test/blob/master/temp4cj_2.png, https://github.com/etcd-io/etcd/pull/15648.