Vulnerability-Lookup

CVE-2026-54916 (GCVE-0-2026-54916)

Vulnerability from cvelistv5 – Published: 2026-09-17 20:01 – Updated: 2026-09-17 20:01

Title

NetBox Device Type Library: Module Shadowing Bypass of prior pickle fix - RCE via missing `tests/__init__.py` + SSRF via unfixed `NETBOX_DT_LIBRARY_URL` → Cloud Metadata credential theft

Summary

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-427 - Uncontrolled Search Path Element
CWE-829 - Inclusion of Functionality from Untrusted Control Sphere

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/netbox-community/devicetype-li…	x_refsource_CONFIRM
https://github.com/netbox-community/devicetype-li…	x_refsource_MISC
https://github.com/netbox-community/devicetype-li…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
netbox-community	devicetype-library	Affected: < b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037g	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "devicetype-library",
          "vendor": "netbox-community",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037g"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-427",
              "description": "CWE-427: Uncontrolled Search Path Element",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-829",
              "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T20:01:14.294Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-wwg5-825x-83g6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-wwg5-825x-83g6"
        },
        {
          "name": "https://github.com/netbox-community/devicetype-library/pull/4239",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/netbox-community/devicetype-library/pull/4239"
        },
        {
          "name": "https://github.com/netbox-community/devicetype-library/commit/b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/netbox-community/devicetype-library/commit/b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037"
        }
      ],
      "source": {
        "advisory": "GHSA-wwg5-825x-83g6",
        "discovery": "UNKNOWN"
      },
      "title": "NetBox Device Type Library: Module Shadowing Bypass of prior pickle fix - RCE via missing `tests/__init__.py` + SSRF via unfixed `NETBOX_DT_LIBRARY_URL` \u2192 Cloud Metadata credential theft"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54916",
    "datePublished": "2026-09-17T20:01:14.294Z",
    "dateReserved": "2026-06-16T13:49:33.556Z",
    "dateUpdated": "2026-09-17T20:01:14.294Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-54916\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-17T21:17:17.790\",\"lastModified\":\"2026-09-17T21:17:17.790\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"netbox-community\",\"product\":\"devicetype-library\",\"versions\":[{\"version\":\"\u003c b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037g\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-427\"},{\"lang\":\"en\",\"value\":\"CWE-829\"}]}],\"references\":[{\"url\":\"https://github.com/netbox-community/devicetype-library/commit/b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/netbox-community/devicetype-library/pull/4239\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-wwg5-825x-83g6\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

FKIE_CVE-2026-54916

Vulnerability from fkie_nvd - Published: 2026-09-17 21:17 - Updated: 2026-09-17 21:17

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/netbox-community/devicetype-library/commit/b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037
	security-advisories@github.com	https://github.com/netbox-community/devicetype-library/pull/4239
	security-advisories@github.com	https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-wwg5-825x-83g6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "devicetype-library",
          "vendor": "netbox-community",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037g"
            }
          ]
        }
      ],
      "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. 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."
    }
  ],
  "id": "CVE-2026-54916",
  "lastModified": "2026-09-17T21:17:17.790",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-17T21:17:17.790",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netbox-community/devicetype-library/commit/b0d9a3dadd0a0a9d3c93b0b2777559fd4bad1037"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netbox-community/devicetype-library/pull/4239"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netbox-community/devicetype-library/security/advisories/GHSA-wwg5-825x-83g6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        },
        {
          "lang": "en",
          "value": "CWE-829"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.