CVE-2026-54685

Published: Jul 20, 2026Modified: Jul 21, 2026

5.3

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

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

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.

References (4)

https://github.com/gtsteffaniak/filebrowser/commit/af08800667b874620edc6f44c3e2e64fec7abd85

Source: security-advisories@github.com

https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.2-beta

Source: security-advisories@github.com

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w

Source: security-advisories@github.com

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-7789-65hx-f26w

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

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