---
id: "CVE-2026-126935"
page: "https://infrastack.ai/live/CVE-2026-126935"
kind: "vulnerability"
aliases: ["CVE-2026-126935"]
title: "Zipline: race condition lets file view limits be exceeded"
severity: "medium"
cvss: 6.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "zipline"]
not_affected_if: ["no-view-limits", "version-4.8.0-or-later"]
published_at: "2026-11-11T23:17:23+00:00"
first_seen_at: "2026-11-11T23:29:41+00:00"
updated_at: "2026-11-11T23:31:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126935", "first_seen_at": "2026-11-11T23:29:41+00:00"}]
exploit_sources: []
---

# Zipline: race condition lets file view limits be exceeded

Link for people: https://infrastack.ai/live/CVE-2026-126935 (this .md is for agents)

Zipline before 4.8.0 counts file views non-atomically, so parallel requests read the same count before it increases. A person holding a file link can view a limited or delete-on-max-views file more times than allowed.

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

## How to check

- Check the running Zipline version; `4.8.0` or later is not affected by this flaw.
- Look at src/server/routes/raw/[id].ts in your deployed copy for how view counting is done.

## Fix

- Zipline: upgrade to `4.8.0` or later.

## Timeline

- 2026-11-11T23:29:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126935

## Documents

- [advisory] Vendor advisory: github.com https://github.com/diced/zipline/security/advisories/GHSA-7xv9-wr46-j578
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/zipline-before-4.8.0-maxviews-limit-bypass-via-race-condition
- [fix] Patch: github.com https://github.com/diced/zipline/commit/1770479d6795ea8700f0ce6ba08a1654d3644c73
- [fix] Release notes: github.com https://github.com/diced/zipline/releases/tag/v4.8.0

## From the sources

Zipline before 4.8.0 contains a race condition vulnerability in src/server/routes/raw/[id].ts that allows remote attackers to bypass file maxViews limits through non-atomic view counting. Attackers holding a file link can send parallel requests that read the same pre-increment count, viewing view-limited or delete-on-max-views files beyond their limit.

---

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