CVE-2018-19572
GitLab CE 8.17 and later and EE 8.3 and later have a symlink time-of-check-to-time-of-use race condition that would allow unauthorized access to files in the GitLab Pages chroot environment. This is fixed in versions 11.5.1, 11.4.8, and 11.3.11.
Date published : 2019-07-10
https://about.gitlab.com/2018/11/28/security-release-gitlab-11-dot-5-dot-1-released/