CVE-2026-72837

EUVD-2026-58651
File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths. Attackers with valid upstream-authenticated credentials can read, modify, delete, and share files belonging to other users by exploiting the server root scope assignment.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
filebrowserfilebrowser
𝑥
< 2.63.20
CNA
Common Weakness Enumeration
References
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-j7jh-37pf-mf8h
https://www.vulncheck.com/advisories/file-browser-before-privilege-escalation-via-proxy-authentication