CVE WatchSep 21, 2026

CVE-2026-54752

NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. The validation test harness

CVSS

9.6

Critical

EPSS

0.4%

p29

KEV

—

Exploit Today

0-100

Published: Sep 17, 2026 · Last modified: Sep 21, 2026 · CWE-502 · CWE-829

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-09-182026-09-22

Technical description

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.

Official references

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