Vulnerability Description
NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. The absence of tests/init.py and the lack of --import-mode=importlib cause pytest prepend import mode to place the tests directory at the front of sys.path during collection. An unauthenticated contributor can add a module such as tests/git.py that shadows GitPython when tests/definitions_test.py executes from git import Git, Repo, or add tests/conftest.py for automatic collection-time execution. Python imports and runs the pull-request module before any test function, allowing arbitrary code execution on the GitHub Actions runner, test-result tampering, and access to tokens or network resources exposed to the workflow. This module-shadowing path is independent of the earlier pickle deserialization flaw and the separately tracked NETBOX_DT_LIBRARY_URL issue. This vulnerability is fixed by commit b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/netbox-community/devicetype-library/commit/b0d9a3dadd0a0a9d3c
- https://github.com/netbox-community/devicetype-library/pull/4239
- https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-
FAQ
What is CVE-2026-54916?
CVE-2026-54916 is a vulnerability with a CVSS score of 8.8 (HIGH). NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. The absence of tests/init.py and the lack of --import-mode=importlib cause pytest prepen...
How severe is CVE-2026-54916?
CVE-2026-54916 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54916?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.