Repository and organization project boards listed the pull requests that reference each issue on the board without checking whether the viewer can read them. When a private pull request mentions an issue on a board the viewer can open, the board revealed the private repository's path and the pull request's number, title and state, to anonymous visitors in the case of a public board. The pull request body, diff and files were not exposed. Boards now skip linked pull requests in repositories where the viewer cannot read pull requests.
https://github.com/go-gitea/gitea/security/advisories/GHSA-c45m-jm46-mwxg
https://github.com/go-gitea/gitea/releases/tag/v28.3.0
https://github.com/go-gitea/gitea/pull/40134
https://github.com/go-gitea/gitea/pull/40016