CVE-2026-46410: FileBrowser Quantum Unauthenticated User Share Share Info Vulnerability

HIGH
Advisory Identifier: GHSA-3jmg-p96m-m328
Share
CWE-200
Published
Advisory Summary

CVE-2026-46410 is a HIGH unauthenticated user share share info vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting FileBrowser Quantum libraries in the Go ecosystem. The issue involves unauthenticated user share share info. Remediation is available by upgrading affected packages to version 0.0.0-20260514154726-1802e1281135, 1.2.1-stable.0.20260514154726-1802e1281135.

CVE-2026-46410 at a Glance

CVE Identifier CVE-2026-46410
GHSA Identifier GHSA-3jmg-p96m-m328
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product FileBrowser Quantum
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-46410

To remediate this vulnerability, upgrade all affected FileBrowser Quantum dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/gtsteffaniak/filebrowser/backend fixed: 0.0.0-20260514154726-1802e1281135 
Upgrade github.com/gtsteffaniak/filebrowser/backend to 0.0.0-20260514154726-1802e1281135
github.com/gtsteffaniak/filebrowser fixed: 1.2.1-stable.0.20260514154726-1802e1281135 
Upgrade github.com/gtsteffaniak/filebrowser to 1.2.1-stable.0.20260514154726-1802e1281135
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/gtsteffaniak/filebrowser/backend

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-46410, inspect your project dependencies for FileBrowser Quantum:

inspect dependencies for github.com/gtsteffaniak/filebrowser/backend

Analyze the terminal output to locate any version of FileBrowser Quantum in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.0-20260514154726-1802e1281135), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In FileBrowser Quantum, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Some sensitive info -- such as source and path can get exposed. ### Patches Update to the latest version ### Workarounds no

CVE-2026-46410 Affected FileBrowser Quantum Versions

2 component(s)
Fixed Versions:
0.0.0-20260514154726-1802e12811351.2.1-stable.0.20260514154726-1802e1281135
Product / Package Ecosystem Affected Versions Fixed Version
github.com/gtsteffaniak/filebrowser/backend
golang/github.com/gtsteffaniak/filebrowser/backend
Go
< 0.0.0-20260514154726-1802e1281135
0.0.0-20260514154726-1802e1281135
github.com/gtsteffaniak/filebrowser
golang/github.com/gtsteffaniak/filebrowser
Go
< 1.2.1-stable.0.20260514154726-1802e1281135
1.2.1-stable.0.20260514154726-1802e1281135

References

GitHub Advisory / Wiki ADVISORY
https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-3jmg-p96m-m328
Security Fix Commit FIX COMMIT
https://github.com/gtsteffaniak/filebrowser/commit/1802e1281135cba83eb4acd86b58293fe121e2a5
FileBrowser Quantum Source Repository REPOSITORY
https://github.com/gtsteffaniak/filebrowser

Frequently Asked Questions

What is CVE-2026-46410?
CVE-2026-46410 is a security vulnerability in FileBrowser Quantum involving unauthenticated user share share info under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which FileBrowser Quantum versions are affected?
Affected versions include releases prior to 0.0.0-20260514154726-1802e1281135, 1.2.1-stable.0.20260514154726-1802e1281135 across affected packages: github.com/gtsteffaniak/filebrowser/backend, github.com/gtsteffaniak/filebrowser.
What version fixes CVE-2026-46410?
Upgrading to 0.0.0-20260514154726-1802e1281135, 1.2.1-stable.0.20260514154726-1802e1281135 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/gtsteffaniak/filebrowser/backend affected?
Yes, github.com/gtsteffaniak/filebrowser/backend is affected in releases prior to 0.0.0-20260514154726-1802e1281135. Upgrade your dependency to 0.0.0-20260514154726-1802e1281135 or later.
Is github.com/gtsteffaniak/filebrowser affected?
Yes, github.com/gtsteffaniak/filebrowser is affected in releases prior to 1.2.1-stable.0.20260514154726-1802e1281135. Upgrade your dependency to 1.2.1-stable.0.20260514154726-1802e1281135 or later.
What CWE is associated with CVE-2026-46410?
CVE-2026-46410 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Go dependencies for CVE-2026-46410?
Run the dependency tree command: 'inspect dependencies for github.com/gtsteffaniak/filebrowser/backend'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3jmg-p96m-m328",
  "modified" : "2026-05-19T20:14:12Z",
  "published" : "2026-05-19T20:14:12Z",
  "aliases" : [ "CVE-2026-46410" ],
  "summary" : "FileBrowser Quantum: unauthenticated user share share info ",
  "details" : "### Impact\nSome sensitive info -- such as source and path can get exposed.\n\n### Patches\nUpdate to the latest version\n\n### Workarounds\nno",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/gtsteffaniak/filebrowser/backend"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.0-20260514154726-1802e1281135"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/gtsteffaniak/filebrowser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.1-stable.0.20260514154726-1802e1281135"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-3jmg-p96m-m328"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gtsteffaniak/filebrowser/commit/1802e1281135cba83eb4acd86b58293fe121e2a5"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gtsteffaniak/filebrowser"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-19T20:14:12Z",
    "nvd_published_at" : null
  }
}