---
id: CVE-2026-54752
title: >-
  NetBox Device Type Library is a collection of community-sourced device type
  definitions for import into NetBox
summary: >-
  NetBox Device Type Library is a collection of community-sourced device type
  definitions for import into NetBox. The validation test harness can
  deserialize pull-request-controlled tracked pickle cache files through
  pickle.load in the rea…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-502
  - CWE-829
vendor: netbox-community
product: devicetype-library
affected:
  - devicetype-library < 1c6f7e2b93589b965318c6e67ac3504831f0e71e
published: '2026-09-17'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:25:27.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54752'
references:
  - url: >-
      https://github.com/netbox-community/devicetype-library/commit/1c6f7e2b93589b965318c6e67ac3504831f0e71e
    label: security-advisories@github.com
  - url: 'https://github.com/netbox-community/devicetype-library/pull/4238'
    label: security-advisories@github.com
  - url: >-
      https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-492p-5wp7-2w7c
    label: security-advisories@github.com
  - url: >-
      https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-492p-5wp7-2w7c
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0066
epssPercentile: 0.49364
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-21T21:10:56.822612Z'
ingestedAt: '2026-09-17T20:28:02.775Z'
---

## Overview

NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. The validation test harness can deserialize pull-request-controlled tracked pickle cache files through pickle.load in the read_pickle_data function in tests/pickle_operations.py. An unauthenticated contributor can change USE_LOCAL_KNOWN_SLUGS in tests/test_configuration.py and supply a crafted tests/known-modules.pickle or tests/known-racks.pickle file that tests/definitions_test.py loads when pytest runs. Deserialization invokes attacker-controlled object reduction behavior, allowing arbitrary code execution in the GitHub Actions runner or in a maintainer process that runs the tests, with the confidentiality, integrity, and availability of reachable resources at risk. This vulnerability is fixed with commit 1c6f7e2b93589b965318c6e67ac3504831f0e71e.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.