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dataclasses-avroschema allows code injection through generated enum-symbol string literals

Type: advisorySources: OSV

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, EnumRepresentation.render_symbols concatenates each schema-controlled enum symbol between double quotes in a generated enum assignment. When generator classes are used directly, a quote can terminate the string literal and inject arbitrary Python code into the enum class body, which executes when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping enum symbol values before rendering them.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-108382
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 18:14 UTC · Revision 1

Source evidence

dataclasses-avroschema allows code injection through generated enum-symbol string literals

core-osv · Original source

Published 13 Oct 2026, 17:44 UTC

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, EnumRepresentation.render_symbols concatenates each schema-controlled enum symbol between double quotes in a generated enum assignment. When generator classes are used directly, a quote can terminate the string literal and inject arbitrary Python code into the enum class body, which executes when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping enum symbol values before rendering them.

osv:CVE-2026-108382
Complete source record
{
  "id": "9df7641f4e2321f1f20162e947c2d3634799ca7ea249ceb4ad83a1af02375c3d",
  "url": "https://osv.dev/vulnerability/CVE-2026-108382",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "dataclasses-avroschema allows code injection through generated enum-symbol string literals",
    "summary": "dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, EnumRepresentation.render_symbols concatenates each schema-controlled enum symbol between double quotes in a generated enum assignment. When generator classes are used directly, a quote can terminate the string literal and inject arbitrary Python code into the enum class body, which executes when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping enum symbol values before rendering them.",
    "evidence": "osv:CVE-2026-108382",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-108382",
      "aliases": [
        "CVE-2026-108382",
        "GHSA-vrq9-94ww-jv3c"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/marcosschroh/dataclasses-avroschema",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3024363f89b8799aacd15cd0bffcaa52c6972387"
                },
                {
                  "fixed": "de45de04f080e829c787a4b22eff92e5e632eaa1"
                },
                {
                  "fixed": "429f3d705d2d04c0c65e2ef832daed5ff91318fc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.38.0"
                      },
                      {
                        "fixed": "0.70.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "429f3d705d2d04c0c65e2ef832daed5ff91318fc"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "de45de04f080e829c787a4b22eff92e5e632eaa1"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.70.6"
                  }
                ]
              }
            }
          ],
          "versions": [
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108382.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.298707454Z",
      "provider": "osv",
      "references": [
        "https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108382.json",
        "https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-vrq9-94ww-jv3c",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-108382",
        "https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-94"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108382.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-108382",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498328,
  "published_at": "2026-10-13T17:44:36.222+00:00"
}