{"cve":"CVE-2026-54093","nvd":{"published":"2026-06-25T19:16:41.360","modified":"2026-06-25T19:58:30.847","status":"Deferred","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":6.8},"cvss_v3":null,"cwes":["CWE-22"],"references":["https://github.com/filebrowser/filebrowser/security/advisories/GHSA-gxjx-7m74-hcq8","https://github.com/filebrowser/filebrowser/security/advisories/GHSA-gxjx-7m74-hcq8"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-54093","score":0.00193,"percentile":0.09015,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-gxjx-7m74-hcq8","url":"https://osv.dev/vulnerability/GHSA-gxjx-7m74-hcq8","summary":"File Browser: FilePath traversal in download-as-zip/tar via Windows-style backslash separators in stored filenames","modified":"2026-06-25T23:11:15.812254269Z","packages":[{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser/v2","purl":"pkg:golang/github.com/filebrowser/filebrowser/v2","ranges":["<2.63.6"],"fixed":["2.63.6"]},{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser","purl":"pkg:golang/github.com/filebrowser/filebrowser","ranges":["<=1.11.0"],"fixed":[]}]},{"id":"GO-2026-5411","url":"https://osv.dev/vulnerability/GO-2026-5411","summary":"File Browser: FilePath traversal in download-as-zip/tar via Windows-style backslash separators in stored filenames in github.com/filebrowser/filebrowser","modified":"2026-06-25T23:01:12.557566251Z","packages":[{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser","purl":"pkg:golang/github.com/filebrowser/filebrowser","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser/v2","purl":"pkg:golang/github.com/filebrowser/filebrowser/v2","ranges":["<2.63.6"],"fixed":["2.63.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}