{"cve":"CVE-2026-54910","nvd":{"published":"2026-07-20T15:16:43.933","modified":"2026-10-24T20:10:00.137","status":"Deferred","description":"FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.4.3-beta, the `subtitlesHandler` endpoint (`GET /api/media/subtitles`) accepts two user-controlled query parameters: `path` and `name`, both of which are used in filesystem operations without sanitization, creating two independent path traversal vectors. The primary vector is the `path` parameter: it is passed directly to `idx.GetRealPath()` without calling `SanitizeUserPath()`, allowing an attacker to escape the storage root and set `parentDir` to any directory on the host. No existing anchor file is required.  The secondary vector is the `name` parameter: it is joined with `parentDir` via `filepath.Join(parentDir, name)` without stripping directory components, allowing traversal relative to any resolved `parentDir`. Any authenticated user (regardless of role or permissions) can exploit either vector to read any text file readable by the server process, including `/etc/passwd`, SSH keys, database credentials, and JWT signing keys. Version 1.4.3-beta patches the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":7.7},"cwes":["CWE-22","CWE-23"],"references":["https://github.com/gtsteffaniak/filebrowser/commit/f3f4bbe80cb569d664174aea874d7bfa008c3b5a","https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-vvp7-h4fj-m28w","https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-vvp7-h4fj-m28w"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-54910","score":0.00377,"percentile":0.31374,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vvp7-h4fj-m28w","url":"https://osv.dev/vulnerability/GHSA-vvp7-h4fj-m28w","summary":"FileBrowser Quantum's path traversal issue in subtitle handler allows any authenticated user to read arbitrary files","modified":"2026-08-18T15:10:36.003910155Z","packages":[{"ecosystem":"Go","name":"github.com/gtsteffaniak/filebrowser/backend","purl":"pkg:golang/github.com/gtsteffaniak/filebrowser/backend","ranges":["<0.0.0-20260608182036-f3f4bbe80cb5"],"fixed":["0.0.0-20260608182036-f3f4bbe80cb5"]}]},{"id":"GO-2026-6164","url":"https://osv.dev/vulnerability/GO-2026-6164","summary":"FileBrowser Quantum's path traversal issue in subtitle handler allows any authenticated user to read arbitrary files in github.com/gtsteffaniak/filebrowser/backend","modified":"2026-08-18T15:00:24.203416398Z","packages":[{"ecosystem":"Go","name":"github.com/gtsteffaniak/filebrowser/backend","purl":"pkg:golang/github.com/gtsteffaniak/filebrowser/backend","ranges":["<0.0.0-20260608182036-f3f4bbe80cb5"],"fixed":["0.0.0-20260608182036-f3f4bbe80cb5"]}]}],"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."]}