http://wmj5kiic7b6kjplpbvwadnht2nh2qnkbnqtcv3dyvpqtz7ssbssftxid.onion/help/update/deprecations.md
In GitLab 18.0, variable forwarding will be updated to ensure protected variables are only passed in specific situations: Project-level protected variables can only be forwarded to downstream pipelines in the same project (child pipelines). Group-level protected variables can only be forwarded to downstream pipelines of projects that belong to the same group as the source project.