CVE-2026-44542
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.
How to fix
- gtsteffaniak filebrowser_quantum1.3.1, 1.3.9 or later
- github.com/gtsteffaniak/filebrowser0.0.0-20260501183844-112740bdd41d or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gtsteffaniak filebrowser_quantum | v < 1.3.1, v < 1.3.9 | 1.3.1, 1.3.9 |
| github.com/gtsteffaniak/filebrowserGo | v < 0.0.0-20260501183844-112740bdd41d | 0.0.0-20260501183844-112740bdd41d |
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Attack Surface Management
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