CVE-2026-35585

HIGH EPSS 77.4%
Published Apr 7, 20262mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 4.0
High
Find Similar
Published Apr 7, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.0.0 until 2.33.8, the hook system in File Browser — which executes administrator-defined shell commands on file events such as upload, rename, and delete — is vulnerable to OS command injection. Variable substitution for values like $FILE and $USERNAME is performed via os.Expand without sanitization. An attacker with file write permission can craft a malicious filename containing shell metacharacters, causing the server to execute arbitrary OS commands when the hook fires. This results in Remote Code Execution (RCE). This feature has been disabled by default for all installations from v2.33.8 onwards, including for existent installations.

CVSS Details

Base Score
7.5
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
77.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-78 OS Command Injection Injection
CWE-88

Affected Products 1

VendorProductVersionRange
filebrowserfilebrowser*≥2.0.0  –  ≤2.63.1

References 2

  • github.com https://github.com/filebrowser/filebrowser/issues/5199
    Patch
  • github.com https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jvpw-637p-h3pw
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/filebrowser/filebrowser/issues/5199
    Patch