CVE-2026-55251 (GCVE-0-2026-55251)

Vulnerability from cvelistv5 – Published: 2026-10-01 19:49 – Updated: 2026-10-01 19:49
VLAI
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-494 - Download of Code Without Integrity Check
  • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
Impacted products
Vendor Product Version
netbox-community devicetype-library Affected: < f41fc1e48dec8d7d31afba5f13a8c73652ff5796
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "devicetype-library",
          "vendor": "netbox-community",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-494",
              "description": "CWE-494: Download of Code Without Integrity Check",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-829",
              "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-01T19:49:32.741Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-5x2m-x42f-g4cm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-5x2m-x42f-g4cm"
        },
        {
          "name": "https://github.com/netbox-community/devicetype-library/commit/f41fc1e48dec8d7d31afba5f13a8c73652ff5796",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/netbox-community/devicetype-library/commit/f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
        }
      ],
      "source": {
        "advisory": "GHSA-5x2m-x42f-g4cm",
        "discovery": "UNKNOWN"
      },
      "title": "NetBox Device Type Library: Arbitrary Code Execution on CI Runner Through Malicious requirements.txt, .pre-commit-hooks-config.yaml, and .gitmodules Files"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55251",
    "datePublished": "2026-10-01T19:49:32.741Z",
    "dateReserved": "2026-06-16T16:44:00.625Z",
    "dateUpdated": "2026-10-01T19:49:32.741Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "devicetype-library",
                "vendor": "netbox-community",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          }
        ],
        "id": "CVE-2026-55251",
        "lastModified": "2026-10-01T20:17:25.957",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 2.5,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-01T20:17:25.957",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/netbox-community/devicetype-library/commit/f41fc1e48dec8d7d31afba5f13a8c73652ff5796"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-5x2m-x42f-g4cm"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-94"
              },
              {
                "lang": "en",
                "value": "CWE-494"
              },
              {
                "lang": "en",
                "value": "CWE-829"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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