---
id: CVE-2026-45568
title: 'zrok is software for sharing web services, files, and network resources'
summary: >-
  zrok is software for sharing web services, files, and network resources. Prior
  to 2.0.3, zrok's Python SDK ProxyShare Flask proxy route accepts an absolute
  URL in the request path and passes it to urllib.parse.urljoin, allowing the
  reque…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-22
vendor: netfoundry
product: zrok
affected:
  - 'zrok >= 0.4.47, < 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-2026-45568'
references:
  - url: >-
      https://github.com/openziti/zrok/commit/7c1dc3ecd1c89d8cd2e845a72c3878bd2d31b4fe
    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-jh67-hwqw-m5r7'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00544
epssPercentile: 0.43217
ingestedAt: '2026-07-20T02:36:03.147Z'
---

## Overview

zrok is software for sharing web services, files, and network resources. Prior to 2.0.3, zrok's Python SDK ProxyShare Flask proxy route accepts an absolute URL in the request path and passes it to urllib.parse.urljoin, allowing the requested path to replace the configured target host and causing requests.request to return a server-side response from an attacker-chosen URL. This issue is fixed in version 2.0.3.

## Affected

- `zrok >= 0.4.47, < 2.0.3`

## Remediation

Upgrade past the affected range:

- `zrok 2.0.3`