CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NCVE-2026-25890
High (8.1) in filebrowser filebrowser. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in github.com/filebrowser/filebrowser/v2 2.57.1.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-863, CWE-706
- Published
- Modified
- Record from
- the NVD, synced
Affected
- filebrowser:filebrowser
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4mh3-h929-w968 | Go | github.com/filebrowser/filebrowser/v2 | <2.57.1 | 2.57.1 |
| GO-2026-4474 | Go | github.com/filebrowser/filebrowser | all versions | no fix published |
| GO-2026-4474 | Go | github.com/filebrowser/filebrowser/v2 | <2.57.1 | 2.57.1 |