HashiCorp Consul Enterprise version 1.7.0 up to 1.8.4 includes a namespace replication bug which can be triggered to cause denial of service via infinite Raft writes. Fixed in 1.7.9 and 1.8.5.
https://www.hashicorp.com/blog/category/consul
https://security.gentoo.org/glsa/202208-09
https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#185-october-23-2020