← Vulnerability feed

Vulnerability record · CVE-2026-27611 · published 25 February 2026

CVE-2026-27611: Gtsteffaniak filebrowser quantum information exposure vulnerability

GGtsteffaniak · 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.

7.1 CVSS 4.0 High EPSS 0.43% · top 64.9% CWE-200 · Information exposureCWE-287 · Improper authentication
7.1CVSS 4.0 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/gtsteffaniak/filebrowser/commit/c51b0ee9738fa4599b409f47c5bf820ef31b4fe1 Patch
https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-8vrh-3pm2-v4v6 ExploitVendor Advisory
https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-8vrh-3pm2-v4v6 ExploitVendor Advisory

Track CVE-2026-27611 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-44542Gtsteffaniak filebrowser quantum path traversal vulnerabilityFileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined wi…EPSS 0.61%5.9CVE-2025-68686FortiOS symbolic link patch bypass exposes sensitive informationFortiOS contains an information exposure flaw (CWE-200) that lets a remote unauthenticated attacker bypass the patch for the symbolic link persistenc…KEVEPSS 30%analysed7.5CVE-2026-20133Cisco Catalyst SD-WAN Manager insufficient file system restrictions expose dataCisco Catalyst SD-WAN Software has insufficient file system restrictions that let an attacker read sensitive files on the underlying operating system…KEVEPSS 32%analysed7.5CVE-2025-31125Vite dev server improper access control exposes arbitrary filesVite's dev server fails to restrict file access when a request uses the ?inline&import or ?raw?import query patterns, allowing content of files that …KEVEPSS 65%analysed5.5CVE-2026-20805Windows Desktop Window Manager information disclosureDesktop Windows Manager (DWM) in Microsoft Windows exposes sensitive information to an unauthorized actor, allowing a local attacker with existing ac…KEVEPSS 7.2%analysed7.5CVE-2021-41277Metabase custom GeoJSON map feature allows local file inclusionMetabase does not validate URLs supplied through the custom GeoJSON map setting (admin->settings->maps->custom maps->add a map) before loading them. …KEVEPSS 97%analysed8.6CVE-2024-24919Check Point Security Gateway information disclosure via remote access VPNCheck Point Security Gateways with Remote Access VPN or Mobile Access Software Blades enabled expose information to an unauthenticated attacker reach…KEVEPSS 100%analysed5.5CVE-2023-21237Android notification UI flaw hides foreground service alertsIn applyRemoteView of NotificationContentInflater.java, Android 13 mishandles notification UI so a foreground service notification can be hidden. The…KEVEPSS 0.27%analysed

Source: NIST National Vulnerability Database (record CVE-2026-27611), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.