HashiCorp Terraform Enterprise up to v202006-1 contained a default signup page that allowed user registration even when disabled, bypassing SAML enforcement. Fixed in v202007-1.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15511
Reference (s):
- https://github.com/hashicorp/terraform-enterprise-release-notes/blob/master/v202007-1.md
- https://www.hashicorp.com/blog/category/terraform/