CVE-2026-25890

HIGH

8.1

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.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/9/2026

Last Modified2/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

filebrowser:filebrowser

Weaknesses (CWE)

CWE-706CWE-863CWE-863

References

https://github.com/filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9(security-advisories@github.com)

https://github.com/filebrowser/filebrowser/releases/tag/v2.57.1(security-advisories@github.com)

https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968(security-advisories@github.com)

IOC Correlations

No correlations recorded

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