CVE-2026-54092: File Browser: DoS Vulnerability on Public Login API

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-25 · updated 2026-06-26
Weakness: CWE-400

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.

Affected products

filebrowser: before 2.63.6

References

https://github.com/filebrowser/filebrowser/commit/847d08bdd135e5c3659f2e6dea2f0cd36617af9b
https://github.com/filebrowser/filebrowser/releases/tag/v2.63.6
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-w5fm-68j4-fpc4
https://vincent.vulcoord.net/score/?state=Not+Scored&year=2026&year=2025&assigned_to=a165dae3-480e-4f7d-bbb8-9b1d78115b69&cve=CVE-2026-54092&analyze=1

Get alerted when CVE-2026-54092 or the next vulnerability affects your stack