`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in GraphQL Union description

{
  "id": "ff64165d74023ce3445b109a4858077fe3af2a4ed6175e6c46b609aa3b2a3978",
  "url": "https://osv.dev/vulnerability/CVE-2026-54621",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in GraphQL Union description",
    "summary": "datamodel-code-generator generates Python data models from schema definitions. Prior to 0.60.1, GraphQL Union description values in src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2 and src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 are rendered into Python comments without neutralizing carriage returns in Python # comments, allowing attacker-controlled GraphQL schema content to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.1.",
    "evidence": "osv:CVE-2026-54621",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-54621",
      "aliases": [
        "CVE-2026-54621",
        "GHSA-j884-q54q-mmx3",
        "PYSEC-2026-3561"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/datamodel-code-generator/datamodel-code-generator",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a46fe94e36806eb4c24cf4e6327afbd5aff3b2f4"
                },
                {
                  "fixed": "a321547e8b94d352394b6f98c919866fc149473c"
                },
                {
                  "fixed": "aec47bc414779f4a9992b3919c8f7663afd6c988"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.25.0"
                      },
                      {
                        "fixed": "0.60.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "aec47bc414779f4a9992b3919c8f7663afd6c988"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a321547e8b94d352394b6f98c919866fc149473c"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.60.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.60.0",
            "0.59.1",
            "0.59.0",
            "0.58.0",
            "0.57.0",
            "0.56.1",
            "0.56.0",
            "0.55.0",
            "0.54.1",
            "0.54.0",
            "0.53.0",
            "0.52.2",
            "0.52.1",
            "0.52.0",
            "0.51.0",
            "0.50.0",
            "0.49.0",
            "0.48.0",
            "0.47.0",
            "0.46.0",
            "0.45.0",
            "0.44.0",
            "0.43.1",
            "0.43.0",
            "0.42.2",
            "0.42.1",
            "0.42.0",
            "0.41.0",
            "0.40.0",
            "0.39.0",
            "0.38.0",
            "0.37.0",
            "0.36.0",
            "0.35.0",
            "0.34.0",
            "0.33.0",
            "0.32.0",
            "0.31.2",
            "0.31.1",
            "0.31.0",
            "0.30.2",
            "0.30.1",
            "0.30.0",
            "0.29.0",
            "0.28.5",
            "0.28.4",
            "0.28.3",
            "0.28.2",
            "0.28.1",
            "0.28.0",
            "0.27.3",
            "0.27.2",
            "0.27.1",
            "0.27.0",
            "0.26.5",
            "0.26.4",
            "0.26.3",
            "0.26.2",
            "0.26.1",
            "0.26.0",
            "0.25.9",
            "0.25.8",
            "0.25.7",
            "0.25.6",
            "0.25.5",
            "0.25.4",
            "0.25.3",
            "0.25.2",
            "0.25.1",
            "0.25.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54621.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.000923183Z",
      "provider": "osv",
      "references": [
        "https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54621.json",
        "https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-j884-q54q-mmx3",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-54621",
        "https://github.com/koxudaxi/datamodel-code-generator/commit/aec47bc414779f4a9992b3919c8f7663afd6c988"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1336",
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54621.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-54621",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491656,
  "published_at": "2026-07-28T21:35:27.863+00:00"
}