A flawed DNS rebinding protection issue was discovered in GitLab CE/EE 10.2 and later in the url_blocker.rb which could result in SSRF where the library is utilized.
url_blocker.rb
{ "versions": [ { "introduced": "10.2.0" }, { "fixed": "11.11.7" }, { "introduced": "10.2.0" }, { "fixed": "11.11.7" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-5464.json"