medium6.3
CVE-2026-55668
File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope
Impact
File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/filebrowser/filebrowser/v2 | <= 2.63.15 | 2.63.16 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-8wc8-hf36-mjh9
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8wc8-hf36-mjh9
- https://nvd.nist.gov/vuln/detail/CVE-2026-55668
- https://github.com/filebrowser/filebrowser/commit/64511ce45e3be379e965f7f4fb0929a068d5bb81
- https://github.com/filebrowser/filebrowser/releases/tag/v2.63.16