CVE-2026-54096 File Browser: Improper Access Control Occurs via Pre-Created Public Share for a Non-existent Path
An attacker can create public shares for non-existent paths, which automatically expose files created later at those paths, leading to unauthorized data disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54096?
CVE-2026-54096 is a high-severity missing authorization vulnerability in filebrowser, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-54096?
6 open source packages ship an affected version, including github.com/filebrowser/filebrowser and github.com/filebrowser/filebrowser/v2.
| Package | Affected | Fixed in |
|---|---|---|
github.com/filebrowser/filebrowser Go | All versions | None |
github.com/filebrowser/filebrowser Go | All versions to 1.11.0 | None |
github.com/filebrowser/filebrowser Go | All versions to 1.11.0 | None |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.63.7 |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.63.7 |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.63.7 |
How do I fix CVE-2026-54096?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-54096 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54096 exists.
Sources
Also known as GHSA-3q2p-72cj-682c, GO-2026-5096.