FKIE_CVE-2026-32631

Vulnerability from fkie_nvd - Published: 2026-04-15 18:17 - Updated: 2026-04-17 15:38
Severity ?
7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.3
security-advisories@github.comhttps://github.com/git-for-windows/git/security/advisories/GHSA-9j5h-h4m7-85hx
security-advisories@github.comhttps://learn.microsoft.com/en-au/windows/whats-new/deprecated-features#:~:text=NTLM
security-advisories@github.comhttps://support.microsoft.com/en-us/topic/upcoming-changes-to-ntlmv1-in-windows-11-version-24h2-and-windows-server-2025-c0554217-cdbc-420f-b47c-e02b2db49b2e
security-advisories@github.comhttps://techcommunity.microsoft.com/blog/windows-itpro-blog/the-evolution-of-windows-authentication/3926848
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s 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",
  "lastModified": "2026-04-17T15:38:09.243",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-15T18:17:17.437",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/git-for-windows/git/security/advisories/GHSA-9j5h-h4m7-85hx"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://learn.microsoft.com/en-au/windows/whats-new/deprecated-features#:~:text=NTLM"
    },
    {
      "source": "security-advisories@github.com",
      "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"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://techcommunity.microsoft.com/blog/windows-itpro-blog/the-evolution-of-windows-authentication/3926848"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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