Repository and organization project boards listed the pull requests that reference each issue on…

Why it is Yellow

• CVSS 7.5 high
• Remotely exploitable without logging in

References

• https://blog.gitea.com/release-of-28.3.0/
• https://github.com/go-gitea/gitea/pull/40016
• https://github.com/go-gitea/gitea/pull/40134
• https://github.com/go-gitea/gitea/releases/tag/v28.3.0
• https://github.com/go-gitea/gitea/security/advisories/GHSA-c45m-jm46-mwxg

Original description

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.