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Vulnerability record · CVE-2026-72839 · published 13 August 2026

CVE-2026-72839: filebrowser through 2.63.16 fails to properly restrict scope and permissions when self-signup is enabled with …

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.

9.3 CVSS 4.0 Critical EPSS 0.57% · top 54.8% CWE-266 · CWE-266 Deferred
9.3CVSS 4.0 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
8 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-48172LiteSpeed cPanel Plugin Redis Feature Privilege EscalationThe LiteSpeed User-End cPanel Plugin before 2.4.5 mishandles Redis enable/disable functionality, allowing privilege escalation that may reach root. I…KEVEPSS 1.0%analysed

Source: NIST National Vulnerability Database (record CVE-2026-72839), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.