CVE-2026-54093
File Browser: Path traversal in download-as-zip/tar via Windows-style backslash separators in stored filenames
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, filebrowser builds the download-as-zip / download-as-tar archive entry names with filepath.ToSlash, which on a Linux host is a no-op for backslashes (\ is only a path separator on Windows). A file whose name contains Windows-style traversal is accepted by the resource handlers, stored on the Linux filesystem with a literal backslash name, and then emitted verbatim as the archive entry name. Windows extractors interpret \ as a path separator and write the extracted file outside the extraction directory — arbitrary file write on the victim who downloads and extracts the archive. This vulnerability is fixed in 2.63.6.
| CWE | CWE-22 |
| Vendor | filebrowser |
| Product | filebrowser |
| Published | Jun 25, 2026 |
| Last Updated | Jun 25, 2026 |
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