CVE-2026-54092 File Browser: DoS Vulnerability on Public Login API
An attacker can cause a denial of service by sending an arbitrarily large password to the login API, crashing the application and affecting the host system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54092?
CVE-2026-54092 is a medium-severity denial of service vulnerability in filebrowser, published on 25 Jun 2026. Any signed-in user can exploit it over the 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 2.63.6, unchecked passwords maximums allow for an arbitrarily large password to be passed into the login API. This spikes CPU and memory, and after testing, crashes, heavily lags any container created, and has even made my docker daemon start to send errors with status code 500 even after the container was destroyed. This vulnerability is fixed in 2.63.6.
Which versions are affected by CVE-2026-54092?
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 | 2.63.6 |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.63.6 |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.63.6 |
How do I fix CVE-2026-54092?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-54092 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54092 exists.
Sources
Also known as GHSA-w5fm-68j4-fpc4, GO-2026-5691.