HashiCorp Consul and Consul Enterprise 1.2.0 up to 1.8.5 allowed operators with operator:read ACL permissions to read the Connect CA private key configuration. Fixed in 1.6.10, 1.7.10, and 1.8.6.
https://www.hashicorp.com/blog/category/consul
https://security.gentoo.org/glsa/202208-09
https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#186-november-19-2020