GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.1 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed an authenticated user to cause denial of service due to insufficient validation.
https://hackerone.com/reports/3517283
https://gitlab.com/gitlab-org/gitlab/-/work_items/587569
https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/