CVE-2026-72838

Medium

Description

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductFilebrowser

PublishedAug 14, 2026

First seenAug 14, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

filebrowser filebrowser2.63.19 or later

Patches

github.com/filebrowser/filebrowser/commit/4daddec6f200b03a721197d8c0b4b652c994894e

Vendor advisories

github.com/filebrowser/filebrowser/security/advisories/GHSA-ffv3-7h97-993q

Affected products

Product	Affected versions	Fixed in
filebrowser filebrowser	v < 2.63.19	2.63.19

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