Security advisory

{
  "id": "703d483e3294c91bd3ef3129d38ef4df3757bfa0e992c78872375c3da51afc56",
  "url": "https://osv.dev/vulnerability/CVE-2020-8315",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-8315",
    "summary": "In Python (CPython) 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1, an insecure dependency load upon launch on Windows 7 may result in an attacker's copy of api-ms-win-core-path-l1-1-0.dll being loaded and used instead of the system's copy. Windows 8 and later are unaffected.",
    "evidence": "osv:CVE-2020-8315",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-8315",
      "aliases": [
        "BIT-libpython-2020-8315",
        "BIT-python-2020-8315",
        "BIT-python-min-2020-8315",
        "CVE-2020-8315",
        "PSF-2020-7"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/python/cpython",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5c4568a05a0a62b5947c55f68f9f2ecfb90a4f12"
                },
                {
                  "last_affected": "02dff8b01100e7cd6d4c93be27202ccb4ea05811"
                },
                {
                  "introduced": "1bf9cc509326bc42cd8cb1650eb9bf64550d817e"
                },
                {
                  "last_affected": "43364a7ae01fbe4288ef42622259a0038ce1edcc"
                },
                {
                  "introduced": "fa919fdf2583bdfead1df00e842f24f30b2a34bf"
                },
                {
                  "last_affected": "1b293b60067f6f4a95984d064ce0f6b6d34c1216"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.6.0"
                      },
                      {
                        "last_affected": "3.6.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.7.0"
                      },
                      {
                        "last_affected": "3.7.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.8.0"
                      },
                      {
                        "last_affected": "3.8.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8315.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:36.507828464Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://bugs.python.org/issue39401"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-8315",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 433994,
  "published_at": "2020-01-28T19:15:17.5+00:00"
}