A blind SSRF vulnerability was identified in all versions of GitLab EE prior to 15.4.6, 15.5 prior to 15.5.5, and 15.6 prior to 15.6.1 which allows an attacker to connect to a local host.
Credits
Thanks [ashish_r_padelkar](https://hackerone.com/ashish_r_padelkar) for reporting this vulnerability through our HackerOne bug bounty program