CVE-2026-72839

EUVD-2026-58547
filebrowser through 2.63.16 fails to properly restrict scope and permissions when self-signup is enabled with default CreateUserDir setting. Unauthenticated attackers can register accounts that inherit the server root scope with full create, modify, delete, rename, share, and download permissions, allowing unrestricted access to all files.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 47.88%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
filebrowserfilebrowser
𝑥
≤ 2.63.16
CNA
Common Weakness Enumeration
References
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-6759-996p-gpj6
https://www.vulncheck.com/advisories/filebrowser-through-privilege-escalation-via-signup
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-6759-996p-gpj6