Medium 5.3Published Jul 20, 2026

CVE-2026-54685FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel

Updated under an hour ago (Oct 27, 2026, 2:50 PM 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 version 1.3.2-beta, the `/api/auth/login` authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a `401`/`403` response almost immediately. When a valid username is provided, the server performs a bcrypt password comparison, causing a measurable delay in the response time. Version 1.3.2-beta patches the issue.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-208
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: Jul 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gtsteffaniak filebrowser gtsteffaniak:filebrowser (from the name)	before 1.3.2-beta	CNA record

References

References

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w	x-refsource-confirm
https://github.com/gtsteffaniak/filebrowser/commit/af08800667b874620edc6f44c3e2e64fec7abd85	x-refsource-misc
https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.2-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.