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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.
Base Score
9.1| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/gtsteffaniak/filebrowser(Go) | 0 | 0.0.0-20260501183844-112740bdd41d | N/A |
| Base Score | 9.1 |
|---|---|
| Vector String | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| Base Severity | Critical |
| Version | 3.1 |
| Attack Vector (AV) | NETWORK |
