Vulnerability · Published Apr 15, 2026 · Assigned by GitHub_M
CVE-2026-32631Git for Windows: `git clone` from manipulated repositories can leak NTLM hashes to arbitrary servers
High 7.4
In plain English
A high-severity information exposure in git from git-for-windows. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| git-for-windows | git | < 2.53.0.windows.3 |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
References
- https://github.com/git-for-windows/git/security/advisories/GHSA-9j5h-h4m7-85hx x_refsource_CONFIRM
- https://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.3 x_refsource_MISC
- https://learn.microsoft.com/en-au/windows/whats-new/deprecated-features#:~:text=NTLM x_refsource_MISC
- 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 x_refsource_MISC
- https://techcommunity.microsoft.com/blog/windows-itpro-blog/the-evolution-of-windows-authentication/3926848 x_refsource_MISC