CVE-2026-72838

7.1 highEPSS 0.5%

High (7.1). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.1 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.5 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-770
Published: 2026-08-14
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

References

https://github.com/filebrowser/filebrowser/commit/4daddec6f200b03a721197d8c0b4b652c994894e
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-ffv3-7h97-993q
https://www.vulncheck.com/advisories/filebrowser-before-disk-exhaustion-via-tus-upload

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