CVE-2026-54685
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductGithub.com/gtsteffaniak/filebrowser/backend
PublishedJul 20, 2026
First seenJul 20, 2026
Weakness typeCWE-208CWE-208
How to fix
Update
- github.com/gtsteffaniak/filebrowser/backend0.0.0-20260317230626-af08800667b8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/gtsteffaniak/filebrowser/backendGo | v < 0.0.0-20260317230626-af08800667b8 | 0.0.0-20260317230626-af08800667b8 |
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