CVE-2026-72837

8.7 highEPSS 0.6%

High (8.7). EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

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

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2026-08-14
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

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

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