Input validation error in FileBrowser - CVE-2026-54092
Published: June 8, 2026 / Updated: September 14, 2026
Vulnerability identifier: #VU133482
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54092
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input validation in the CheckPwd function in users/password.go when handling login requests to the api/login endpoint. A remote user can send a specially crafted login request with an excessively large password to cause a denial of service.
Concurrent requests can spike CPU and memory usage and may cause the service to become unresponsive or crash.
Affected software
FileBrowser
How to mitigate CVE-2026-54092
Install security update from vendor's website.
FileBrowser - update to 2.63.6