Gogs is an open source self-hosted Git service. In version 0.13.3 and prior, an authenticated user can cause a DOS attack. If one of the repo files is deleted before synchronization, it will cause the application to crash. This issue has been patched in versions 0.13.4 and 0.14.0+dev.
https://github.com/gogs/gogs/security/advisories/GHSA-cr88-6mqm-4g57