Authentication Bypass in File Browser Product by File Browser Inc.
CVE-2026-25890

8.1HIGH

Key Information:

Vendor

Filebrowser

Status
Filebrowser
Vendor
CVE Published:
9 February 2026

What is CVE-2026-25890?

File Browser, a file management interface, is susceptible to authentication bypass due to improper URL handling. Before version 2.57.1, authenticated users could exploit this vulnerability by manipulating request URLs with multiple slashes (e.g., //private/). This could cause the file path authorization check to fail, while the underlying filesystem still resolves the intended path, allowing access to restricted files. Users are advised to update to version 2.57.1 or later to mitigate this risk.

Affected Version(s)

filebrowser < 2.57.2

References

https://github.com/filebrowser/filebrowser/security/advis...
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https://github.com/filebrowser/filebrowser/commit/489af40...
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https://github.com/filebrowser/filebrowser/releases/tag/v...
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CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.