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CVE-2026-116682

FileBrowser Quantum: Symlink following escapes user scope allowing arbitrary file read outside the served directory

CVSS score

8.6

EPSS probability

—

Risk score

0.9

Published

4 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-116682: FileBrowser Quantum Symlink Scope Bypass

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A security vulnerability in FileBrowser Quantum allows symbolic link following to escape the user scope, leading to arbitrary file reading.

Why does it matter?

Authenticated users or holders of public share links can access server files outside of the served directory and read sensitive data.

What should be done?

  • Update gtsteffaniak/filebrowser to v1.5.2-stable or v2.0.1-beta
  • Follow the vendor security advisory
  • Review FollowSymlinks configurations
Chain of evidence and sources2 verified claims

FileBrowser Quantum, sembolik bağlantıların kullanıcı kapsamı içinde kalıp kalmadığını doğrulamamaktadır.

S0 · daybreach-canonicalS1 · cvelist

Kimliği doğrulanmamış genel paylaşım bağlantısı sahipleri atanan kapsam dışındaki dosyaları okuyabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.5.2-stable and 2.0.1-beta, file read handling in backend/pkg/indexing/indexingFiles.go resolves symbolic links through GetRealPath without confirming that the resolved target remains inside the source root and the user's authorized scope. Download, preview, media, OnlyOffice, and public-share read flows that enable FollowSymlinks can therefore serve an out-of-scope target through a reachable in-scope symlink. An authenticated user with download access can read server-accessible files outside the assigned scope, and a holder of a public share link can do the same without an account when the shared directory exposes such a symlink. This issue is fixed in 1.5.2-stable and 2.0.1-beta.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CWE: CWE-22, CWE-59

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-116682 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1gtsteffaniakfilebrowser View
2gogithub.com/gtsteffaniak/filebrowser/backend View
Total affected vendors: 2|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
8.6CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NNVD
8.6CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NCVE CNA
8.6CVSS 3.x—Vector not publishedGitHub Advisory
0.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-116682 is associated with the following CWEs:

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')CWE-59: Common Weakness Enumeration Entry CWE-59

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-116682 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-mgqf-5mf5-prfjvendor-advisoryhttps://github.com/gtsteffaniak/filebrowser/pull/2795vendor-advisoryhttps://github.com/gtsteffaniak/filebrowser/pull/2800vendor-advisoryhttps://github.com/gtsteffaniak/filebrowser/commit/3c8c02414eefd3351ffe437fa39ff6eb150ffa67vendor-advisoryhttps://github.com/gtsteffaniak/filebrowser/commit/4126edeb07a015c3809a89249b283e07a4e50c38vendor-advisoryhttps://github.com/gtsteffaniak/filebrowser/releases/tag/v1.5.2-stablevendor-advisoryhttps://github.com/gtsteffaniak/filebrowser/releases/tag/v2.0.1-betavendor-advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-116682vendor-advisoryhttps://github.com/advisories/GHSA-mgqf-5mf5-prfjvendor-advisory

CVSS Vector Radar Chart

8.6 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

G
gtsteffaniak logo
gtsteffaniak
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go logo
go

Weakness Type (CWE & CAPEC)

CWE-22 CWE-59

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CVE-2026-116682 · FileBrowser Quantum: Symlink following…