High 8.6Published Oct 27, 2026

CVE-2026-116682FileBrowser Quantum: Symlink following escapes user scope allowing arbitrary file read outside the served directory

Updated under an hour ago (Oct 29, 2026, 5:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for gtsteffaniak filebrowser

Exploited in the last 30 days

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user's authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta.

CVSS: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weakness (CWE): CWE-22, CWE-59
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

gtsteffaniak filebrowser gtsteffaniak:filebrowser (from the name)	before 1.5.2-stable; from 2.0.0-beta, < 2.0.1-beta	CNA record

References

References

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfj	x-refsource-confirm
https://github.com/gtsteffaniak/filebrowser/pull/2795	x-refsource-misc
https://github.com/gtsteffaniak/filebrowser/pull/2800	x-refsource-misc
https://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67	x-refsource-misc
https://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38	x-refsource-misc
https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stable	x-refsource-misc
https://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-beta	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.