CVE-2026-44542

Severity CVSS v4.0:

Pending analysis

Type:

CWE-22 Path Traversal

Publication date:

14/05/2026

Last modified:

15/05/2026

Description

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner’s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): High

Base Score 3.x

9.10

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:gtsteffaniak:filebrowser_quantum::-::::::*		1.3.1 (excluding)
cpe:2.3:a:gtsteffaniak:filebrowser_quantum::beta::::::*		1.3.9 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-44542

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools