GitPython before 3.1.57 Arbitrary File Overwrite and Read

{
  "id": "fc946d2fc7bfe64c6a0ca11816578d2f118f3774fbdf92576f36e2263459d9fb",
  "url": "https://osv.dev/vulnerability/CVE-2026-73620",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "GitPython before 3.1.57 Arbitrary File Overwrite and Read",
    "summary": "GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create(), allowing attackers to pass unsafe options via kwargs. Attackers can use --prefix to overwrite arbitrary files with repository content or -F to read arbitrary files returned in-band.",
    "evidence": "osv:CVE-2026-73620",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-73620",
      "aliases": [
        "CVE-2026-73620",
        "GHSA-3f7w-8rr8-f37f",
        "PYSEC-2026-3949"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gitpython-developers/gitpython",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ccbd573ac4ab52ccdcf395c400e600d5809bcc88"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.1.57"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitpython_project:gitpython:*:*:*:*:*:python:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.1.57"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.1.56",
            "3.1.55",
            "3.1.54",
            "3.1.53",
            "3.1.52",
            "3.1.51",
            "3.1.50",
            "3.1.49",
            "3.1.48",
            "3.1.47",
            "3.1.44",
            "3.1.43",
            "3.1.42",
            "3.1.41",
            "3.1.40",
            "3.1.38",
            "3.1.35",
            "3.1.34",
            "3.1.33",
            "3.1.32",
            "3.1.31",
            "3.1.30",
            "3.1.29",
            "3.1.28",
            "3.1.27",
            "3.1.26",
            "3.1.25",
            "3.1.24",
            "3.1.23",
            "3.1.22",
            "3.1.20",
            "3.1.19",
            "3.1.18",
            "3.1.17",
            "3.1.16",
            "3.1.13",
            "3.1.12",
            "3.1.11",
            "3.1.10",
            "3.1.9",
            "3.1.8",
            "3.1.7",
            "3.1.6",
            "3.1.5",
            "3.1.4",
            "3.1.3",
            "3.1.2",
            "3.1.1",
            "3.1.0",
            "3.0.9",
            "3.0.8",
            "3.0.7",
            "3.0.6",
            "3.0.5",
            "3.0.4",
            "3.0.3",
            "3.0.2",
            "3.0.1",
            "2.1.13",
            "3.0.0",
            "2.1.12",
            "2.1.11",
            "2.1.10",
            "2.1.9",
            "2.1.8",
            "2.1.6",
            "2.1.5",
            "2.1.4",
            "2.1.3",
            "2.1.2",
            "2.1.1",
            "2.1.0",
            "2.0.9",
            "winerr_show",
            "2.0.8",
            "2.0.7",
            "2.0.6",
            "2.0.5",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "0.3.2.1",
            "1.0.2",
            "0.3.7",
            "1.0.1",
            "1.0.0",
            "0.3.6",
            "0.3.5",
            "0.3.4",
            "0.3.3",
            "0.3.2",
            "0.3.2-RC1",
            "0.3.1-beta2",
            "0.3.1-beta1",
            "0.3.0-beta2",
            "0.3.0-beta1",
            "0.2.0-beta1",
            "0.1.6",
            "0.1.5",
            "0.1.4",
            "0.1.4-pre"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73620.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.869879805Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73620.json",
        "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-3f7w-8rr8-f37f",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73620",
        "https://www.vulncheck.com/advisories/gitpython-before-arbitrary-file-overwrite-and-read"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73620.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73620",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503446,
  "published_at": "2026-08-13T11:28:21.426+00:00"
}