An issue was discovered in GitLab Community and Enterprise Edition 8.4 through 11.11. The protected branches feature contained a access control issue which resulted in a bypass of the protected branches restriction rules. It has Incorrect Access Control.
An issue was discovered in GitLab Community and Enterprise Edition 6.8 through 11.11. Users could bypass the mandatory external authentication provider sign-in restrictions by sending a specially crafted request. It has Improper Authorization.
An issue was discovered in GitLab Enterprise Edition (EE) 8.9.0 through 12.6.1. Using the project import feature, it was possible for someone to obtain issues from private projects.