Command injection in FileBrowser - #VU133476
Published: June 8, 2026
Vulnerability identifier: #VU133476
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: File Browser
Affected software:
FileBrowser
FileBrowser
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary os commands.
The vulnerability exists due to improper neutralization of special elements in runner/parser.go ParseCommand and http/commands.go commandsHandler when processing user-supplied command input through a configured shell interpreter. A remote user can send a specially crafted command string containing shell metacharacters to execute arbitrary os commands.
Exploitation requires command execution to be enabled, a shell interpreter such as /bin/sh -c to be configured, and the user to have Execute permission with at least one allowed command.
Remediation
Install security update from vendor's website.