Is CVE-2026-55251 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-55251?

CVE-2026-55251 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-55251

Description

NetBox Device Type Library is a collection of community-sourced device type definitions for import into NetBox. Prior to commit f41fc1e, the CI workflow .github/workflows/validation.yml runs on pull_request and executes code supplied by the pull request before any maintainer review. Three PR-editable files drive this: "requirements.txt", ".pre-commit-hooks-config.yaml" / ".pre-commit-yamlfmt-config.yaml", and ".gitmodules". A contributor with no special repository access could open a pull request that modifies these files and have their code run on the CI runner. This issue has been patched via commit f41fc1e.