Nixpkgs security tracker

Login with GitHub

Details of issue NIXPKGS-2026-0221

NIXPKGS-2026-0221
published on
Permalink CVE-2026-25890
8.1 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): None (N)
updated 3 months, 2 weeks ago by @LeSuisse Activity log
  • Created suggestion 3 months, 2 weeks ago
  • @LeSuisse ignored
    4 packages
    • filebrowser-quantum
    • python312Packages.filebrowser-safe
    • python313Packages.filebrowser-safe
    • python314Packages.filebrowser-safe
    3 months, 2 weeks ago
  • @LeSuisse accepted 3 months, 2 weeks ago
  • @LeSuisse published on GitHub 3 months, 2 weeks ago
File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to 2.57.1, an authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1.

Affected products

filebrowser
  • ==< 2.57.2

Matching in nixpkgs

Ignored packages (4)

Package maintainers

Upstream advisory: https://github.com/aardappel/lobster/issues/395
Upstream patch: https://github.com/filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9