NetBox Device Type Library: Arbitrary Code Execution on CI Runner Through Malicious requirements.txt, .pre-commit-hooks-config.yaml, and .gitmodules Files

{
  "id": "38c09e33cda1ca4a79d79e6b75a9a3bd93c958baf6ea98ab0ee116a33e4e9166",
  "url": "https://osv.dev/vulnerability/CVE-2026-55251",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "NetBox Device Type Library: Arbitrary Code Execution on CI Runner Through Malicious requirements.txt, .pre-commit-hooks-config.yaml, and .gitmodules Files",
    "summary": "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.",
    "evidence": "osv:CVE-2026-55251",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-55251",
      "aliases": [
        "CVE-2026-55251",
        "GHSA-5x2m-x42f-g4cm"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/netbox-community/devicetype-library",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55251.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.262078714Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55251.json",
        "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-5x2m-x42f-g4cm",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-55251",
        "https://github.com/netbox-community/devicetype-library/commit/f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-494",
          "CWE-829",
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55251.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-55251",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492944,
  "published_at": "2026-10-01T19:49:32.741+00:00"
}