---
id: CVE-2026-45576
title: 'zrok is software for sharing web services, files, and network resources'
summary: >-
  zrok is software for sharing web services, files, and network resources. From
  0.4.23 until 2.0.3, `zrok2 copy` stores attacker-controlled WebDAV or zrok
  drive paths such as /../outside.txt in the source inventory and passes them to
  Files…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-22
vendor: netfoundry
product: zrok
affected:
  - 'zrok >= 0.4.23, < 2.0.3'
patched:
  - zrok 2.0.3
published: '2026-07-16'
updated: '2026-07-20'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45576'
references:
  - url: >-
      https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457
    label: security-advisories@github.com
  - url: 'https://github.com/openziti/zrok/releases/tag/v2.0.3'
    label: security-advisories@github.com
  - url: 'https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqj'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00496
epssPercentile: 0.41632
ingestedAt: '2026-07-20T02:36:03.170Z'
---

## Overview

zrok is software for sharing web services, files, and network resources. From 0.4.23 until 2.0.3, `zrok2 copy` stores attacker-controlled WebDAV or zrok drive paths such as /../outside.txt in the source inventory and passes them to FilesystemTarget.WriteStream, allowing the sync pipeline to write files outside the selected local filesystem destination root. This issue is fixed in version 2.0.3.

## Affected

- `zrok >= 0.4.23, < 2.0.3`

## Remediation

Upgrade past the affected range:

- `zrok 2.0.3`