CVE-2026-54685: CWE-208: Observable Timing Discrepancy in gtsteffaniak filebrowser
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.
CVE-2026-54685: CWE-208: Observable Timing Discrepancy in gtsteffaniak filebrowser
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.
CVSS v3.1
Score 5.3medium
Affected software
pkg:github/gtsteffaniak/filebrowserRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-15T22:53:58.561Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5e33e12a4a8d598937d22d
Added to database: 07/20/2026, 14:42:41 UTC
Last enriched: 07/20/2026, 14:58:00 UTC
Last updated: 09/03/2026, 22:52:12 UTC
Views: 79
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