CVE-2026-54093
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/filebrowser/filebrowser/v2 | <= 2.63.5 | 2.63.6 |
| go | github.com/filebrowser/filebrowser | <= 1.11.0 | none recorded |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-gxjx-7m74-hcq8
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-gxjx-7m74-hcq8
- https://github.com/filebrowser/filebrowser/commit/847d08bdd135e5c3659f2e6dea2f0cd36617af9b
- https://github.com/filebrowser/filebrowser/releases/tag/v2.63.6