CVE-2026-32631
Git for Windows: `git clone` from manipulated repositories can leak NTLM hashes to arbitrary servers
- State
- Published
- Severity
- 7.4 High
- Published
- Apr 15, 2026
- Updated
- Apr 15, 2026
- Reserved
- Mar 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Affected Products
| Product | Versions |
|---|---|
gitgit-for-windows |
|
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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