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CVE-2026-27611

FileBrowser Quantum: Password Protection Not Enforced on Shared File Links

Published: Feb 25, 2026Updated: Feb 27, 2026 Sources: CVE List NVD GHSACWE-200
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 77.9%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200CWE-287CWE-288

Affected Products

filebrowsergtsteffaniak
On-prem
Web & CMS Plugins / wordpress-plugin
filebrowser quantumgtsteffaniak
On-prem
Web & CMS Plugins / wordpress-plugin
github.com/gtsteffaniak/filebrowser/backendGoOSS Libraries
gtsteffaniakWeb & CMS Pluginsaka filebrowser
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

3 techniques
Collection
Initial Access
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References

https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-8vrh-3pm2-v4v6
github.com
https://github.com/gtsteffaniak/filebrowser/commit/c51b0ee9738fa4599b409f47c5bf820ef31b4fe1
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-27611
nvd.nist.gov
and 3 more references View all →

Timeline

Published
Feb 25, 2026
Last Updated
Feb 27, 2026

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