Zeep SSRF because Settings.forbid_external is not enforced

{
  "id": "b913a5553a6bfbf20bb85f7a3729829054f5f53ae12af47942a170300e34aabf",
  "url": "https://osv.dev/vulnerability/CVE-2026-58501",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Zeep SSRF because Settings.forbid_external is not enforced",
    "summary": "Zeep is a Python SOAP client. From 4.0.0 before 4.3.3, Settings.forbid_external is defined but not enforced when parsing WSDL or XSD documents, allowing transitive xsd:import, xsd:include, wsdl:import, and lxml entity or DTD references to fetch attacker-chosen HTTP or HTTPS URLs. This issue is fixed in version 4.3.3.",
    "evidence": "osv:CVE-2026-58501",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-58501",
      "aliases": [
        "CVE-2026-58501",
        "GHSA-4cc2-g9w2-fhf6",
        "PYSEC-2026-2323"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mvantellingen/python-zeep",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a65b4363c48b5c3f687b8df570bcbada8ba66b9b"
                },
                {
                  "fixed": "1b7072c0dba397b86e8a47cf766a39f981b3a2de"
                },
                {
                  "fixed": "83eb07bc6c84d841329d4f88856fecdba86f753e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:python-zeep:zeep:*:*:*:*:*:python:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.3.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "83eb07bc6c84d841329d4f88856fecdba86f753e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1b7072c0dba397b86e8a47cf766a39f981b3a2de"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "4.3.3"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58501.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.166070154Z",
      "provider": "osv",
      "references": [
        "https://github.com/mvantellingen/python-zeep/releases/tag/4.3.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58501.json",
        "https://github.com/mvantellingen/python-zeep/security/advisories/GHSA-4cc2-g9w2-fhf6",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-58501",
        "https://github.com/mvantellingen/python-zeep/commit/83eb07bc6c84d841329d4f88856fecdba86f753e"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58501.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-58501",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489717,
  "published_at": "2026-07-08T19:31:55.937+00:00"
}