What is CVE-2026-72837?

CVE-2026-72837 is a high-severity vulnerability in Filebrowser, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-08-14.

How severe is CVE-2026-72837?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Filebrowser

CVE-2026-72837

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 v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Filebrowser — versions 0, 2.63.20

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-72837?: CVE-2026-72837 is a high-severity vulnerability in Filebrowser, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-08-14.
How severe is CVE-2026-72837?: High severity. CVSS v3 base score is 8.8 out of 10.