Vulnerability · Published Jun 25, 2026 · Assigned by GitHub_M
CVE-2026-54094File Browser: Symlink following lets scoped users read, overwrite, and share files outside their filebrowser scope
High 7.5
In plain English
A high-severity path traversal in filebrowser from filebrowser. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.14, it does not stop the HTTP file handlers from following symbolic links before they open, serve, write, share, or list a file. As a result, a scoped user — and in some cases an unauthenticated public-share recipient — can cross the intended scope boundary by following a symlink whose path is lexically inside their scope but whose target is outside it. This vulnerability is fixed in 2.63.14.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/filebrowser/filebrowser | no fix listed | GHSA-239w-m3h6-ch8v |
| Go | github.com/filebrowser/filebrowser | no fix listed | GO-2026-5055 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.14 | GHSA-239w-m3h6-ch8v |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.14 | GO-2026-5055 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | < 2.63.14 |
Weakness: CWE-22, CWE-59 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N