> CVE-2026-54685 [MEDIUM]

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PUBLISHED
2026-07-20 15:16
MODIFIED
2026-07-20 15:16
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.34%
Top 72.8%
DATA SOURCES:
NVD đź”— 2026-07-20 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-01 GITHUB đź”— 2026-10-29 OSV đź”— 2026-11-02

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EXPLOITABILITY
3.9
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-208

> CWE DETAILED DESCRIPTIONS

CWE-208: Observable Timing Discrepancy - Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

> GITHUB SECURITY ADVISORY

GHSA-7789-65hx-f26w MODERATE

FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel

AFFECTED PACKAGES:
GO / github.com/gtsteffaniak/filebrowser/backend
< 0.0.0-20260317230626-af08800667b8
Fixed in: 0.0.0-20260317230626-af08800667b8

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel

AFFECTED PACKAGES:
Unknown / Unknown
12 versions affected
ALIASES:
GHSA-7789-65hx-f26w, GO-2026-4820

> HISTORIQUE DES MODIFICATIONS

Première apparition
20/07/2026 15:16
Source: NVD
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-208: Observable Timing Discrepancy - Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant infor...
Total des modifications: 1 Dernière mise à jour: 3 months ago

> REFERENCES

https://github.com/gtsteffaniak/filebrowser/commit/af08800667b874620edc6f44c3e2e...
https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.2-beta
https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f...
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