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Vulnerability record · CVE-2026-72837 · published 14 August 2026

CVE-2026-72837: Improper access control vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.56% · top 55.7% CWE-284 · Improper access control Deferred
8.7CVSS 4.0 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
8 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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-j7jh-37pf-mf8h
https://www.vulncheck.com/advisories/file-browser-before-privilege-escalation-via-proxy-authentication

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2026-72837), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.