A regular expression denial of service issue in GitLab versions 8.13 to 14.2.5, 14.3.0 to 14.3.3 and 14.4.0 could cause excessive usage of resources when a specially crafted username was used when provisioning a new user
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39914.json"