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CVE-2026-44542— FileBrowser Quantum: Unauthenticated Path Traversal in Public Share Delete Allows Arbitrary File Deletion

Quick assessment

Affected
gtsteffaniak filebrowser
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FileBrowser Quantum是Graham Steffaniak个人开发者的一个文件管理器。 FileBrowser Quantum 1.3.1-stable之前版本和1.3.9-beta之前版本存在路径遍历漏洞，该漏洞源于路径清理前与可信基础路径拼接，可能导致目录遍历攻击，删除共享目录外的任意文件。

CVSS 9.1 · Critical EPSS 0.60% · P47

Affected Version Matrix 2

VendorProduct Version RangeStatus
gtsteffaniak filebrowser < 1.3.1-stable affected
< 1.3.9-beta affected
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I. Basic Information for CVE-2026-44542

Vulnerability Information
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Vulnerability Title
FileBrowser Quantum: Unauthenticated Path Traversal in Public Share Delete Allows Arbitrary File Deletion
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
FileBrowser Quantum 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FileBrowser Quantum是Graham Steffaniak个人开发者的一个文件管理器。 FileBrowser Quantum 1.3.1-stable之前版本和1.3.9-beta之前版本存在路径遍历漏洞，该漏洞源于路径清理前与可信基础路径拼接，可能导致目录遍历攻击，删除共享目录外的任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gtsteffaniak filebrowser < 1.3.1-stable -

II. Public POCs for CVE-2026-44542

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III. Intelligence Information for CVE-2026-44542

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Vendor Advisories for CVE-2026-44542 (1)

IV. Related Vulnerabilities

Same product: filebrowser
Same vendor: gtsteffaniak
Same weakness: CWE-22

V. Comments for CVE-2026-44542

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