What is CVE-2026-72838?

CVE-2026-72838 is a medium-severity vulnerability in Filebrowser, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-08-14.

How severe is CVE-2026-72838?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Filebrowser

CVE-2026-72838

FileBrowser versions before 2.63.19 fail to enforce the declared Upload-Length in the TUS resumable-upload PATCH endpoint, allowing authenticated users to write arbitrary data to disk. Attackers can send oversized request bodies that exceed the declared upload length to exhaust available disk space and cause service unavailability.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Filebrowser — versions 0, 2.63.19

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

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

Frequently asked questions

What is CVE-2026-72838?: CVE-2026-72838 is a medium-severity vulnerability in Filebrowser, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-08-14.
How severe is CVE-2026-72838?: Medium severity. CVSS v3 base score is 6.5 out of 10.