What is the CVSS score of CVE-2026-27611?

CVE-2026-27611 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-27611?

Yes, a public proof-of-concept exploit is available for CVE-2026-27611. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27611?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.

Filebrowser Quantum CVE-2026-27611

MEDIUM

Information Exposure (CWE-200)

2026-02-25 security-advisories@github.com

GHSA-8vrh-3pm2-v4v6

Information Disclosure Filebrowser Quantum Suse Gtsteffaniak

6.5

CVSS 3.1 · GitHub Advisory

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Vulnerability Assessment

Weakness	CWE CWE-200 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V14 - Data Protection Data exposure prevention MITRE ATT&CK 2 techniques across 2 tactics: Collection, Discovery The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 6.5 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Public exploit/POC available.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

FileBrowser Quantum versions prior to 1.1.3-stable and 1.2.6-beta expose a password bypass vulnerability in shared files, allowing unauthenticated recipients to download protected content by accessing the direct download link embedded in share details. An attacker possessing only the share link can retrieve files without providing the intended password, completely circumventing access controls. Public exploit code exists for this vulnerability, and patches are available in the patched versions.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 6.5

RemediationAI

A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.

Affected Packages

go github.com/gtsteffaniak/filebrowser/backend fix: 0.0.0-20260221163904-dbcfba993b85

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in go

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-200 (Information Exposure). Affects Filebrowser Quantum. FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to versions 1.1.3-stable and 1.2.6-beta, when users share password-protected files, the recipient can completely bypass the password and still download the file. This happens because the API returns a direct download link in the details of the share, which is accessible to anyone with JUST THE SHARE LINK, even without the password. Versions 1.1.3-stable and 1.2.6-beta fix the issue.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 6.5 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

SUSE MEDIUM

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

PoC Detected

Feb 27, 2026 - 19:12 vuln.today

Public exploit code

Patch released

Feb 27, 2026 - 19:12 nvd

Patch available

CVE Published

Feb 25, 2026 - 03:16 nvd

MEDIUM 6.5

DescriptionGitHub Advisory

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to versions 1.1.3-stable and 1.2.6-beta, when users share password-protected files, the recipient can completely bypass the password and still download the file. This happens because the API returns a direct download link in the details of the share, which is accessible to anyone with JUST THE SHARE LINK, even without the password. Versions 1.1.3-stable and 1.2.6-beta fix the issue.

Executive ViewAI

Why It Matters

Organizations using FileBrowser Quantum should be aware of notable risk from CVE-2026-27611, a information exposure vulnerability rated CVSS 6.5. Sensitive information could be exposed to unauthorized parties. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.

Business Impact: Moderate

Compensating Controls

Apply vendor patch. If patching is delayed: restrict endpoint access, redact sensitive data in logs.

Threat Intelligence Overview

EPSS Score

0.0%

Top 90% exploitable

Threat Intel

1 source

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS GHSA Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +32

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:gtsteffaniak:filebrowser_quantum:*:*:*:*:*:*:*:*

cpe:2.3:a:gtsteffaniak:filebrowser_quantum:1.1.3:beta:*:*:*:*:*:*

Same weakness CWE-200 – Information Exposure

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CVE-2024-24919 HIGH POC

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CVE-2013-7331 MEDIUM POC

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CVE-2025-31125 MEDIUM POC

5.3

CVE-2025-11749 CRITICAL POC

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CVE-2017-16894 HIGH POC

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CVE-2017-11165 CRITICAL POC

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Same technique Information Disclosure

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CVE-2019-2725 CRITICAL POC

9.8

CVE-2021-34523 CRITICAL POC

9.0

CVE-2013-2251 CRITICAL POC

9.8

CVE-2017-5638 CRITICAL POC

9.8

CVE-2025-24813 CRITICAL POC

9.8

CVE-2025-68613 HIGH POC

8.8

CVE-2015-1701 HIGH POC

7.8

CVE-2017-0147 HIGH POC

7.5

Vendor StatusVendor

SUSE

Severity: Medium

Product	Status
openSUSE Leap 15.6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
openSUSE Leap 15.5	Fixed

References

Advisories & patches

PATCH https://github.com/gtsteffaniak/filebrowser/commit/c51b0ee9738fa4599b409f47c5bf820ef31b4fe1 ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:0757/

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