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TI-2026-27688 Aliases CVE-2026-35585GHSA-jvpw-637p-h3pw

File Browser has a Command Injection via Hook Runner

Priority HIGH 68CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01997 80th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed filebrowser (filebrowser): 2.33.8github.com/filebrowser/filebrowser/v2 (Go): 2.33.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
filebrowserfilebrowser2.0.0-rc.1 to before 2.33.82.33.8Patch availableCNA
—github.com/filebrowser/filebrowser/v2 (Go)before 2.33.82.33.8Patch availableGHSA-jvpw-637p-h3pw
  • filebrowser Vendorfilebrowser Affected 2.0.0-rc.1 to before 2.33.8 Fixed in 2.33.8 Patch available CNA
  • github.com/filebrowser/filebrowser/v2 (Go) Vendor— Affected before 2.33.8 Fixed in 2.33.8 Patch available GHSA-jvpw-637p-h3pw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*2.0.0 – 2.63.1Vulnerablefilebrowser
  • cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.63.1 Vulnerable ·filebrowser

Remediation

  • Fix · CNA filebrowser (filebrowser) Fixed in 2.33.8
  • Fix · GHSA-jvpw-637p-h3pw github.com/filebrowser/filebrowser/v2 (Go) Fixed in 2.33.8 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35585
  2. 2026-10-03 Alias added: GHSA-jvpw-637p-h3pw

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2026-25251 File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin CVSS 4.0CRITICAL 10.0
  • TI-2026-23305 File Browser: TUS Delete Endpoint Bypasses Delete Permission Check CVSS 3.1CRITICAL 9.1
  • TI-2026-26777 File Browser's Signup Grants Execution Permissions When Default Permissions Includes Execution CVSS 3.1CRITICAL 9.8
  • TI-2025-33000 File Browser vulnerable to command execution allowlist bypass CVSS 3.1HIGH 8.1
  • TI-2026-23759 FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse) CVSS 3.1HIGH 8.9
  • TI-2023-20699 A cross-site scripting (XSS) vulnerability in FileBrowser before v2.23.0 allows an… CVSS 3.1CRITICAL 9.0
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences