CVE-2026-54685
Published:July 20, 2026
Updated:September 23, 2026
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.
Affected Packages
github.com/gtsteffaniak/filebrowser/backend (GO):
Affected version(s) >=v0.0.0-20241202171450-266a76459de5 <v0.0.0-20260317230626-af08800667b8Fix Suggestion:
Update to version v0.0.0-20260317230626-af08800667b8Related Resources (6)
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Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Observable Timing Discrepancy
EPSS
Base Score:
0.47