GHSA-95CV-R8X4-VH75 OpenList: Authenticated users can rename files outside their base path via batch rename `src_name` traversal

Summary The /api/fs/batchrename handler validates and authorizes only the requested source directory. It rejects path separators in newname, but it does not validate srcname. The handler concatenates srcdir and attacker-controlled srcname, then passes the result to the filesystem rename layer,...