#VU125398 Improper privilege management in FileBrowser - CVE-2026-34528
Published: April 8, 2026
Vulnerability identifier: #VU125398
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-34528
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
FileBrowser
FileBrowser
Software vendor:
File Browser
File Browser
Description
The vulnerability allows a remote attacker to execute arbitrary commands on the server.
The vulnerability exists due to improper privilege management in the signupHandler and command execution authorization logic when processing self-registration and subsequent command execution requests. A remote attacker can self-register an account that inherits execution permissions and allowed commands to execute arbitrary commands on the server.
Exploitation requires public signup, server-side command execution, and default user settings that grant execute permission and populate an allowed commands list.
Remediation
Install security update from vendor's website.