OS Command Injection in FileBrowser - CVE-2026-35585
Published: April 8, 2026
Vulnerability identifier: #VU125399
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-35585
CWE-ID: CWE-78
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 code.
The vulnerability exists due to improper neutralization of special elements used in an os command in the Runner.exec hook runner when expanding attacker-controlled filename or username variables into shell-based hook commands. A remote privileged user can upload, create, or rename a file with shell metacharacters to execute arbitrary code.
Exploitation requires shell-based hooks to be configured and triggered by file events such as upload, rename, or delete.
How to mitigate CVE-2026-35585
Install security update from vendor's website.