More details from the vendor

• GitLab Critical Patch Release: 17.4.2, 17.3.5, 17.2.9 - https://about.gitlab.com/releases/2024/10/09/patch-release-gitlab-17-4-2-released/

Run pipelines on arbitrary branches

An issue was discovered in GitLab EE affecting all versions starting from 12.5 prior to 17.2.9, starting from 17.3, prior to 17.3.5, and starting from 17.4 prior to 17.4.2, which allows running pipelines on arbitrary branches. This is a critical severity issue (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N, 9.6). It is now mitigated in the latest release and is assigned CVE-2024-9164.