CVE-2026-25890

Name: CVE-2026-25890
Creator: NVD / NIST
Published: 2026-02-09T22:16:03.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2026-25890 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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, an authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

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, an authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.46%

36.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Filebrowser	Filebrowser	< 2.57.1

References

https://github.com/filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9Patch
https://github.com/filebrowser/filebrowser/releases/tag/v2.57.1Product, Release Notes
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968Exploit, Vendor Advisory

Timeline

Published: Feb 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25890?

How severe is CVE-2026-25890?

CVE-2026-25890 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25890?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25890?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST