What is CVE-2026-54685?

CVE-2026-54685 is a medium-severity vulnerability in Gtsteffaniak Filebrowser, classified under CWE-208. CVSS score: 5.3/10. Published 2026-07-20.

How severe is CVE-2026-54685?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Gtsteffaniak Filebrowser

CVE-2026-54685

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.

EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Gtsteffaniak Filebrowser — versions < 1.3.2-beta

Weakness classification (CWE)

CWE-208

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-54685?: CVE-2026-54685 is a medium-severity vulnerability in Gtsteffaniak Filebrowser, classified under CWE-208. CVSS score: 5.3/10. Published 2026-07-20.
How severe is CVE-2026-54685?: Medium severity. CVSS v3 base score is 5.3 out of 10.