---
id: "CVE-2026-126938"
page: "https://infrastack.ai/live/CVE-2026-126938"
kind: "vulnerability"
aliases: ["CVE-2026-126938"]
title: "Zipline: forged upload offsets bypass quota and exhaust server disk"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["file-uploads", "package", "self-hosted", "zipline"]
not_affected_if: ["managed-hosting", "version-4.6.4-or-later"]
published_at: "2026-11-13T10:18:00+00:00"
first_seen_at: "2026-11-13T10:47:27+00:00"
updated_at: "2026-11-13T10:52:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126938", "first_seen_at": "2026-11-13T10:47:27+00:00"}]
exploit_sources: []
---

# Zipline: forged upload offsets bypass quota and exhaust server disk

Link for people: https://infrastack.ai/live/CVE-2026-126938 (this .md is for agents)

Zipline, a self-hosted file sharing server, lets a logged-in user forge Content-Range offsets on chunked uploads. An attacker can send tiny chunks with large declared offsets to make the server create oversized files and fill its disk.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Zipline version; the sources say versions before `4.6.4` are affected.
- Review whether user accounts can upload files to the partial upload endpoint.

## Fix

- Zipline: move to `4.6.4` or later.

## Timeline

- 2026-11-13T10:47:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126938

## Documents

- [advisory] Vendor advisory: github.com https://github.com/diced/zipline/security/advisories/GHSA-fp8p-hf8g-fw65
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/zipline-before-4.6.4-upload-quota-bypass-via-forged-content-range-headers

## From the sources

Zipline before 4.6.4 contains a resource allocation vulnerability that allows authenticated users to bypass chunked-upload size and quota checks by forging Content-Range offsets and totals. Attackers can send tiny chunks to the partial upload endpoint with large declared offsets, causing the server to create oversized files and exhaust disk space.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_