An information disclosure vulnerability exists in the lunary-ai/lunary, specifically in the "runs/{run_id}/related" endpoint. This endpoint does not verify that the user has the necessary access rights to the run(s) they are accessing. As a result, it returns not only the specified run but also all runs that have the "run_id" listed as their parent run. This issue affects the main branch, commit a761d833. The vulnerability allows unauthorized users to obtain information about non-public runs and their related runs, given the "run_id" of a public or non-public run.