GitLab EE version 11.5 is vulnerable to a persistent XSS vulnerability in the Operations page. This is fixed in 11.5.1.
https://about.gitlab.com/2018/11/28/security-release-gitlab-11-dot-5-dot-1-released/
Source: Mitre, NVD
Published: 2019-07-10
Updated: 2019-07-11
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 5.4
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Severity: Medium