An issue has been discovered in GitLab affecting all versions starting from 10.0 before 12.9.8, all versions starting from 12.10 before 12.10.7, all versions starting from 13.0 before 13.0.1. A user with the role of developer could use the import project feature to leak CI/CD variables.
https://hackerone.com/reports/1939987
https://gitlab.com/gitlab-org/gitlab/-/issues/407374
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2069.json