pydicom pynetdicom Library Path Traversal

{
  "id": "3516dfdef0eccc64fde6154a1aec946b4b56f76ff6d4b674272c1cb0ba0f8ea0",
  "url": "https://osv.dev/vulnerability/CVE-2026-56445",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pydicom pynetdicom Library Path Traversal",
    "summary": "The qrscp application's C-STORE handler uses a specific instance from attacker-supplied DICOM datasets directly in os.path.join() without sanitization, allowing file writes to arbitrary paths.",
    "evidence": "osv:CVE-2026-56445",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-56445",
      "aliases": [
        "CVE-2026-56445"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pydicom/pynetdicom",
              "type": "GIT",
              "events": [
                {
                  "introduced": "de1aa04c7ac5199867eb9ea8e23fe5c3630fed28"
                },
                {
                  "last_affected": "2692cb93222c82c872ec8ecc8a426f1c9d86bc46"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "last_affected": "3.0.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.0.4",
            "v3.0.3",
            "v3.0.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0",
            "v1.5.0",
            "v1.4.0",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56445.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.313982366Z",
      "provider": "osv",
      "references": [
        "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-176-01.json",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56445.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56445",
        "https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-176-01",
        "https://github.com/pydicom/pynetdicom"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "icscert",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56445.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-56445",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516681,
  "published_at": "2026-06-25T20:46:44.045+00:00"
}