Vulnerability · Published Jun 25, 2026 · Assigned by GitHub_M
CVE-2026-54096File Browser: Improper Access Control Occurs via Pre-Created Public Share for a Non-existent Path
High 8.4
In plain English
A high-severity incorrect authorization in filebrowser from filebrowser. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% 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 2.63.7, `POST /api/share/<path>` accepts an authenticated request for an arbitrary path and stores a public share record without checking whether the target file currently exists. Later, when a file is created at that same path, the previously created public share immediately becomes valid and exposes the new file through `GET /api/public/dl/<hash>`. This vulnerability is fixed in 2.63.7.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/filebrowser/filebrowser | no fix listed | GHSA-3q2p-72cj-682c |
| Go | github.com/filebrowser/filebrowser | no fix listed | GO-2026-5096 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.7 | GHSA-3q2p-72cj-682c |
| Go | github.com/filebrowser/filebrowser/v2 | 2.63.7 | GO-2026-5096 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | < 2.63.7 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H