Vulnerability · Published Sep 17, 2026 · Assigned by GitHub_M
CVE-2026-54752NetBox Device Type Library: Insecure Pickle Deserialization in Test Suite Allows Remote Code Execution via Malicious Pull Request
Critical 9.6
In plain English
A critical-severity unsafe deserialization in devicetype-library from netbox-community. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| netbox-community | devicetype-library | < 1c6f7e2b93589b965318c6e67ac3504831f0e71e |
Weakness: CWE-502, CWE-829 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-492p-5wp7-2w7c x_refsource_CONFIRM
- https://github.com/netbox-community/devicetype-library/pull/4238 x_refsource_MISC
- https://github.com/netbox-community/devicetype-library/commit/1c6f7e2b93589b965318c6e67ac3504831f0e71e x_refsource_MISC