{"api_version":"1","generated_at":"2026-08-13T16:58:41+00:00","cve":"CVE-2026-73509","urls":{"html":"https://cve.report/CVE-2026-73509","api":"https://cve.report/api/cve/CVE-2026-73509.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-73509","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73509"},"summary":{"title":"OpenList: Authenticated users can rename files outside their base path via batch rename `src_name` traversal","description":"OpenList a file list program that supports multiple storage. Prior to 4.2.4, the authenticated /api/fs/batch_rename handler in server/handles/fsbatch.go authorizes only the source directory produced by user.JoinPath(req.SrcDir) and validates renameObject.NewName with checkRelativePath, but does not validate attacker-controlled renameObject.SrcName, supplied as src_name, before concatenating it with the authorized path and passing the result to fs.Rename. A user with rename permission can use traversal segments in src_name to make path normalization select a file outside the authorized directory and configured base path, resulting in cross-user file integrity loss, limited availability impact, and file-existence disclosure through success or error responses. 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