Requesting `/{username}/-/repositories` for an individual user instead of an organization made the organization home handler dereference a nil organization and panic. The request needs no authentication and no special configuration. The server answered with an HTTP 500 error and logged a panic for each request; the fix returns 404 for individual users.
https://github.com/go-gitea/gitea/security/advisories/GHSA-c3cr-qq9g-666c
https://github.com/go-gitea/gitea/releases/tag/v28.2.0
https://github.com/go-gitea/gitea/pull/39847
https://github.com/go-gitea/gitea/pull/39839