CVE-2026-72838

FileBrowser before 2.63.19 Disk Exhaustion via TUS Upload

MEDIUM
6.5
CVSS Score
Published: August 14, 2026 at 11:35 AM UTC
Updated: September 8, 2026 at 08:49 PM UTC
1 product affected across 1 vendorFilebrowser

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.63.19
Vendor states this is fixed in 2.63.19 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-770

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