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TI-2026-25251 Aliases CVE-2026-32760GHSA-5gg9-5g7w-hm73

File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin

Priority HIGH 82CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
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-269 and CWE-284.

Summary

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. In versions 2.61.2 and below, any unauthenticated visitor can register a full administrator account when self-registration (signup = true) is enabled and the default user permissions have perm.admin = true. The signup handler blindly applies all default settings (including Perm.Admin) to the new user without any server-side guard that strips admin from self-registered accounts. The signupHandler is supposed to create unprivileged accounts for new visitors. It contains no explicit user.Perm.Admin = false reset after applying defaults. If an administrator (intentionally or accidentally) configures defaults.perm.admin = true and also enables signup, every account created via the public registration endpoint is an administrator with full control over all files, users, and server settings. This issue has been resolved in version 2.62.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00695 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed filebrowser (filebrowser): 2.62.0github.com/filebrowser/filebrowser/v2 (Go): 2.62.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
filebrowserfilebrowserbefore 2.62.02.62.0Patch availableCNA
—github.com/filebrowser/filebrowser/v2 (Go)before 2.62.02.62.0Patch availableGHSA-5gg9-5g7w-hm73
  • filebrowser Vendorfilebrowser Affected before 2.62.0 Fixed in 2.62.0 Patch available CNA
  • github.com/filebrowser/filebrowser/v2 (Go) Vendor— Affected before 2.62.0 Fixed in 2.62.0 Patch available GHSA-5gg9-5g7w-hm73

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*before 2.62.0Vulnerablefilebrowser
  • cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* Versions before 2.62.0 Vulnerable ·filebrowser

Remediation

  • Fix · CNA filebrowser (filebrowser) Fixed in 2.62.0
  • Fix · GHSA-5gg9-5g7w-hm73 github.com/filebrowser/filebrowser/v2 (Go) Fixed in 2.62.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32760
  2. 2026-10-03 Alias added: GHSA-5gg9-5g7w-hm73

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • 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
  • TI-2026-27710 File Browser: Proxy auth auto-provisioned users inherit Execute permission and Commands CVSS 3.1HIGH 8.8
See all 31 →

Sources

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