---
id: "CVE-2026-126951"
page: "https://infrastack.ai/live/CVE-2026-126951"
kind: "vulnerability"
aliases: ["CVE-2026-126951"]
title: "Zipline: path traversal lets logged-in users read arbitrary server files"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "zipline"]
not_affected_if: ["auth-required", "managed-hosting"]
published_at: "2026-11-13T10:18:02+00:00"
first_seen_at: "2026-11-13T10:47:28+00:00"
updated_at: "2026-11-13T10:54:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126951", "first_seen_at": "2026-11-13T10:47:28+00:00"}]
exploit_sources: []
---

# Zipline: path traversal lets logged-in users read arbitrary server files

Link for people: https://infrastack.ai/live/CVE-2026-126951 (this .md is for agents)

Zipline through 4.4.0 has a path traversal flaw in GET /api/user/files/:id/raw that treats the id as a datasource key when a fallback applies. An authenticated user can send encoded traversal sequences to escape the uploads directory and read files such as /etc/shadow.

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

## How to check

- Check the installed Zipline version against the `4.4.0` range in the sources.
- Confirm whether the Local datasource is in use for uploads.

## Timeline

- 2026-11-13T10:47:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126951

## Documents

- [advisory] Vendor advisory: github.com https://github.com/diced/zipline/security/advisories/GHSA-8xjg-qm2p-75gm
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/zipline-through-4.4.0-authenticated-path-traversal-via-api-user-files-id-raw

## From the sources

Zipline through 4.4.0 contains a path traversal vulnerability that allows authenticated users to read arbitrary server files by abusing a fallback treating the :id parameter as a datasource key. Attackers can send encoded traversal sequences in the :id of GET /api/user/files/:id/raw to escape the Local datasource uploads directory and read files like /etc/shadow.

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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_