GitLab has remediated an issue in GitLab EE affecting all versions from 16.7 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that, under certain conditions could have allowed an authenticated user to access iteration data from private descendant groups by querying the iterations API endpoint.
Credits
Thanks [go7f0](https://hackerone.com/go7f0) for reporting this vulnerability through our HackerOne bug bounty program
