{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.53.0.windows.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f8165afd89b0c190677a093f20894f5fce12f97a"
            }
          ],
          "repo": "https://github.com/git-for-windows/git",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-9j5h-h4m7-85hx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32631.json"
  },
  "details": "Git for Windows is the Windows port of Git. Versions prior to 2.53.0.windows.3 do not have protections that prevent attackers from obtaining a user's NTLM hash. The NTLM hash can be obtained by tricking users into cloning a malicious repository, or checking out a malicious branch, that accesses an attacker-controlled server. By default, NTLM authentication does not need any user interaction. By brute-forcing the NTLMv2 hash (which is expensive, but possible), credentials can be extracted. This issue has been fixed in version 2.53.0.windows.3.",
  "id": "CVE-2026-32631",
  "modified": "2026-07-15T01:49:01.973443447Z",
  "published": "2026-04-15T17:26:44.154Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.3"
    },
    {
      "type": "WEB",
      "url": "https://learn.microsoft.com/en-au/windows/whats-new/deprecated-features#:~:text=NTLM"
    },
    {
      "type": "WEB",
      "url": "https://support.microsoft.com/en-us/topic/upcoming-changes-to-ntlmv1-in-windows-11-version-24h2-and-windows-server-2025-c0554217-cdbc-420f-b47c-e02b2db49b2e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32631.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/git-for-windows/git/security/advisories/GHSA-9j5h-h4m7-85hx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32631"
    },
    {
      "type": "ARTICLE",
      "url": "https://techcommunity.microsoft.com/blog/windows-itpro-blog/the-evolution-of-windows-authentication/3926848"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Git for Windows: `git clone` from manipulated repositories can leak NTLM hashes to arbitrary servers"
}