6.5 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): LOW
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): HIGH
- Integrity impact (I): NONE
- Availability impact (A): NONE
File Browser has an Authorization Policy Bypass in its Public Share Download Flow
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (perm.download = false) but granted share privileges (perm.share = true) to exfiltrate file content by creating public share links. While the direct raw download endpoint (/api/raw/) correctly enforces the download permission, the share creation endpoint only checks Perm.Share, and the public download handler (/api/public/dl/<hash>) serves file content without verifying that the original file owner has download permission. This means any authenticated user with share access can circumvent download restrictions by sharing a file and then retrieving it via the unauthenticated public download URL. The vulnerability undermines data-loss prevention and role-separation policies, as restricted users can publicly distribute files they are explicitly blocked from downloading directly. This issue has been fixed in version 2.62.0.
References
Affected products
- ==< 2.62.0
Matching in nixpkgs
pkgs.filebrowser
Filebrowser is a web application for managing files and directories
pkgs.filebrowser-quantum
Access and manage your files from the web
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nixos-unstable 1.1.0-stable
- nixpkgs-unstable 1.1.0-stable
- nixos-unstable-small 1.2.2-stable
pkgs.python312Packages.filebrowser-safe
Snapshot of django-filebrowser for the Mezzanine CMS
pkgs.python313Packages.filebrowser-safe
Snapshot of django-filebrowser for the Mezzanine CMS
pkgs.python314Packages.filebrowser-safe
Snapshot of django-filebrowser for the Mezzanine CMS
Package maintainers
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@HritwikSinghal Hritwik Singhal <nix@thorin.theoakenshield.com>
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@prikhi Pavan Rikhi <pavan.rikhi@gmail.com>
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@JocimSus Joachim Susatiyo <joe.susatiyo@gmail.com>