What is CVE-2026-25889?

CVE-2026-25889 is a medium-severity vulnerability in Filebrowser, classified under Improper Handling of Case Sensitivity. CVSS score: 5.4/10. Published 2026-02-09.

How severe is CVE-2026-25889?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Filebrowser

CVE-2026-25889

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to 2.57.1, a case-sensitivity flaw in the password validation logic allows any authent…

EPSS: 0.000 (4.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Filebrowser — versions < 2.57.1

Weakness classification (CWE)

CWE-178 — Improper Handling of Case Sensitivity

References

https://github.com/filebrowser/filebrowser/security/advisories/GHSA-hxw8-4h9j-hq2r (x_refsource_CONFIRM)
https://github.com/filebrowser/filebrowser/commit/ff2f00498cff151e2fb1f5f0b16963bf33c3d6d4 (x_refsource_MISC)
https://github.com/filebrowser/filebrowser/releases/tag/v2.57.1 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-25889?: CVE-2026-25889 is a medium-severity vulnerability in Filebrowser, classified under Improper Handling of Case Sensitivity. CVSS score: 5.4/10. Published 2026-02-09.
How severe is CVE-2026-25889?: Medium severity. CVSS v3 base score is 5.4 out of 10.