CVE-2018-19570
GitLab CE/EE, versions 11.3 before 11.3.11, 11.4 before 11.4.8, and 11.5 before 11.5.1, are vulnerable to an XSS vulnerability in Markdown fields via unrecognized HTML tags.
Date published : 2019-07-10
http://www.securityfocus.com/bid/109169
https://about.gitlab.com/2018/11/28/security-release-gitlab-11-dot-5-dot-1-released/