{"cve":"CVE-2026-54091","nvd":{"published":"2026-06-25T19:16:41.103","modified":"2026-06-26T19:16:42.673","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, File Browser's public share handlers rebase the share owner's filesystem root to the shared directory and then evaluate descendant paths against the owner's global and per-user rules using the rebased relative path instead of the original path relative to the owner's scope. As a result, an attacker who knows a public directory share URL can access files and subdirectories that the owner explicitly blocked with rules, as long as those blocked paths are located underneath the shared directory. In the simplest case this is an unauthenticated information disclosure through `GET /api/public/share/*` and `GET /api/public/dl/*`. This vulnerability is fixed in 2.63.6.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-863"],"references":["https://github.com/filebrowser/filebrowser/commit/e07c59df0b850f5924d5b1683e8609661ddcf534","https://github.com/filebrowser/filebrowser/releases/tag/v2.63.6","https://github.com/filebrowser/filebrowser/security/advisories/GHSA-j9jx-hp4c-ghhh"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-54091","score":0.00516,"percentile":0.43931,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-j9jx-hp4c-ghhh","url":"https://osv.dev/vulnerability/GHSA-j9jx-hp4c-ghhh","summary":"File Browser has incorrect access control for public directory shares via rule path rebasing","modified":"2026-07-21T15:00:42.555596392Z","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"]}]},{"id":"GO-2026-5458","url":"https://osv.dev/vulnerability/GO-2026-5458","summary":"File Browser has incorrect access control for public directory shares via rule path rebasing in github.com/filebrowser/filebrowser","modified":"2026-06-25T23:01:13.643954606Z","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."]}