An issue was discovered in GitLab CE/EE affecting all versions starting from 12.0 prior to 16.11.5, starting from 17.0 prior to 17.0.3, and starting from 17.1 prior to 17.1.1, which allows for an attacker to cause a denial of service using a crafted OpenAPI file.
Credits
Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program