pdfminer.six vulnerable to Arbitrary Code Execution via Crafted PDF Input

{
  "id": "810b03d2afdd0be2964a73a1c8d5a283e3e213c082b88823d1c05029f58e732c",
  "url": "https://osv.dev/vulnerability/CVE-2025-64512",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pdfminer.six vulnerable to Arbitrary Code Execution via Crafted PDF Input",
    "summary": "Pdfminer.six is a community maintained fork of the original PDFMiner, a tool for extracting information from PDF documents. Prior to version 20251107, pdfminer.six will execute arbitrary code from a malicious pickle file if provided with a malicious PDF file. The `CMapDB._load_data()` function in pdfminer.six uses `pickle.loads()` to deserialize pickle files. These pickle files are supposed to be part of the pdfminer.six distribution stored in the `cmap/` directory, but a malicious PDF can specify an alternative directory and filename as long as the filename ends in `.pickle.gz`. A malicious, zipped pickle file can then contain code which will automatically execute when the PDF is processed. Version 20251107 fixes the issue.",
    "evidence": "osv:CVE-2025-64512",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-64512",
      "aliases": [
        "CVE-2025-64512",
        "GHSA-wf5f-4jwr-ppcp",
        "PYSEC-2026-1762"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pdfminer/pdfminer.six",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b808ee05dd7f0c8ea8ec34bdf394d40e63501086"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "20251107"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b808ee05dd7f0c8ea8ec34bdf394d40e63501086"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b808ee05dd7f0c8ea8ec34bdf394d40e63501086"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "20251107"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "20251107"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "20250506",
            "20250416",
            "20250327",
            "20240706",
            "20221105",
            "20220524",
            "20220506",
            "20220319",
            "20211012",
            "20201018",
            "20200726",
            "20200720",
            "20200517",
            "20200402",
            "20200124",
            "20200121",
            "20200104",
            "20191110",
            "20191107",
            "20191020",
            "20181108",
            "20170720",
            "20170419",
            "20160614"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-64512.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.051214365Z",
      "provider": "osv",
      "references": [
        "https://github.com/pdfminer/pdfminer.six/releases/tag/20251107",
        "https://lists.debian.org/debian-lts-announce/2025/11/msg00017.html",
        "https://lists.debian.org/debian-lts-announce/2026/01/msg00005.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64512.json",
        "https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-wf5f-4jwr-ppcp",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-64512",
        "https://github.com/pdfminer/pdfminer.six/commit/b808ee05dd7f0c8ea8ec34bdf394d40e63501086"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-502"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64512.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-64512",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498069,
  "published_at": "2025-11-10T21:58:37.95+00:00"
}