Git for Windows leaks NTLM hash when cloning from an attacker-controlled server

{
  "id": "206faea0f4330b8c87ee19b935705ad806b5e633810e5fd15dd44273becca69e",
  "url": "https://osv.dev/vulnerability/CVE-2025-66413",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Git for Windows leaks NTLM hash when cloning from an attacker-controlled server",
    "summary": "Git for Windows is the Windows port of Git. Prior to 2.53.0(2), it is possible to obtain a user's NTLM hash by tricking them into cloning from a malicious server. Since NTLM hashing is weak, it is possible for the attacker to brute-force the user's account name and password. This vulnerability is fixed in 2.53.0(2).",
    "evidence": "osv:CVE-2025-66413",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-66413",
      "aliases": [
        "CVE-2025-66413",
        "GHSA-hv9c-4jm9-jh3x"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/git-for-windows/git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e9edee0b34751bf4d7d1feda0e2535bff64d4e77"
                },
                {
                  "fixed": "e9edee0b34751bf4d7d1feda0e2535bff64d4e77"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "< 2.53.0(2)"
                      },
                      {
                        "last_affected": "< 2.53.0(2)"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e9edee0b34751bf4d7d1feda0e2535bff64d4e77"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.53.0.windows.2"
                  }
                ]
              }
            }
          ],
          "versions": [
            "< 2.53.0(2)"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66413.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.961150740Z",
      "provider": "osv",
      "references": [
        "https://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66413.json",
        "https://github.com/git-for-windows/git/security/advisories/GHSA-hv9c-4jm9-jh3x",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-66413"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-200"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66413.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-66413",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491452,
  "published_at": "2026-03-10T20:34:32.769+00:00"
}