---
id: CVE-2023-4570
aliases:
  - GHSA-3f48-9j7q-q2gv
  - PYSEC-2026-1695
title: NI MeasurementLink Python Services Improper Access Restriction vulnerability
summary: NI MeasurementLink Python Services Improper Access Restriction vulnerability
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: ni-measurementlink-service
product: ni-measurementlink-service
ecosystem: pip
affected:
  - ni-measurementlink-service < 1.1.1
  - 'ni-measurementlink-service >= 1.2.0.dev0, < 1.2.0'
patched:
  - ni-measurementlink-service 1.1.1
  - ni-measurementlink-service 1.2.0
published: '2023-10-05'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-3f48-9j7q-q2gv'
references:
  - url: >-
      https://github.com/ni/measurementlink-python/security/advisories/GHSA-3f48-9j7q-q2gv
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-4570'
  - url: >-
      https://github.com/ni/measurementlink-python/commit/3e9d45147befc9a151fca5582c64fa77c7ba1980
  - url: >-
      https://github.com/ni/measurementlink-python/commit/d2c73b1e0252081e1b89767aa916d73772d04dd9
  - url: 'https://github.com/ni/measurementlink-python'
  - url: >-
      https://www.ni.com/en/support/documentation/supplemental/23/improper-restriction-in-ni-measurementlink-python-services.html
tags:
  - osv
  - pip
epss: 0.00281
epssPercentile: 0.20908
ingestedAt: '2026-07-08T18:25:44.895Z'
---

## Overview

### Impact
An improper access restriction in NI MeasurementLink Python services could allow an attacker on an adjacent network to reach services exposed on localhost.  These services were previously thought to be unreachable outside of the node.  This affects measurement plug-ins written in Python using version 1.1.0 of the `ni-measurementlink-service` Python package and all previous versions.

### Patches
Upgrade all Python measurement plug-ins to use `ni-measurementlink-service` version 1.1.1 or later.

### References
Visit [ni.com/info](http://www.ni.com/info) and enter the info code `cve-2023-4570` for more information.

## Affected packages

- `ni-measurementlink-service < 1.1.1`
- `ni-measurementlink-service >= 1.2.0.dev0, < 1.2.0`

## Remediation

Upgrade to a patched release:

- `ni-measurementlink-service 1.1.1`
- `ni-measurementlink-service 1.2.0`