What’s Vulnerable › Vulnerabilities

CVE-2026-27611: FileBrowser Quantum: Password Protection Not Enforced on Shared File Links

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-25 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• gtsteffaniak filebrowser: before 1.1.3; from 1.2.0 before 1.2.6; 1.1.3-beta — fixed in 1.1.3, 1.2.6

How to fix

Upgrade to a fixed version: gtsteffaniak filebrowser 1.1.3, 1.2.6. Check the vendor advisory for mitigations.

References

• https://github.com/gtsteffaniak/filebrowser/commit/c51b0ee9738fa4599b409f47c5bf820ef31b4fe1
• https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-8vrh-3pm2-v4v6
• https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-8vrh-3pm2-v4v6

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