Medium severity · published Feb 25, 2026
CVE-2026-27611
FileBrowser Quantum: Password Protection Not Enforced on Shared File Links
6.5
CVSS
0.4%
EPSS
No
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
filebrowser · gtsteffaniak
< 1.1.3-stable; >= 1.2.0-beta, < 1.2.6-beta · source: vendor
FQ
Filebrowser Quantum · Gtsteffaniak
before 1.1.3; 1.2.0 before 1.2.6; 1.1.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27611
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27611
Patch
https://github.com/gtsteffaniak/filebrowser/commit/c51b0ee9738fa4599b409f47c5bf820ef31b4fe1
Exploit
https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-8vrh-3pm2-v4v6
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