In all versions of GitLab CE/EE since version 13.0, an instance that has the setting to disable Bitbucket Server import enabled is bypassed by an attacker making a crafted API call.
In all versions of GitLab CE/EE since version 13.0, an instance that has the setting to disable Bitbucket Server import enabled is bypassed by an attacker making a crafted API call.
https://about.gitlab.com/releases/2021/09/30/security-release-gitlab-14-3-1-released/#bypass-disabled-bitbucket-server-import-source-project-creation