CVE-2026-62960: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in git-for-windows git
Description
Git for Windows versions prior to 2.55.0.windows.4 contain a vulnerability where a malicious remote Git server can cause the client to initiate outbound SMB connections during clone or fetch operations if transfer.bundleuri=true. This behavior can expose NTLM authentication credentials to an attacker-controlled host. The issue is resolved in version 2.55.0.windows.4.
CVSS v3.1
Score 7.4high
Affected software
git-for-windows
git
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-62960 is an information exposure vulnerability in Git for Windows. When cloning or fetching from a malicious remote Git server that advertises a bundle URI, the client may interpret non-HTTP(S) URIs as local filesystem paths, removing file URI prefixes and potentially initiating outbound SMB connections to attacker-controlled UNC paths or shares. This can leak NTLM authentication material to the attacker. The vulnerability affects versions prior to 2.55.0.windows.4 and is fixed in that version.
Potential Impact
An attacker controlling a remote Git server can cause a vulnerable Git for Windows client to initiate outbound SMB connections, exposing NTLM authentication credentials. This can lead to unauthorized disclosure of sensitive authentication information. The vulnerability does not allow code execution or integrity violation but compromises confidentiality.
Mitigation Recommendations
Upgrade Git for Windows to version 2.55.0.windows.4 or later, where this vulnerability is fixed. Until upgrading, avoid enabling transfer.bundleuri=true or connecting to untrusted Git servers that might exploit this behavior.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-14T22:32:17.732Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a88b011acd9273b49a9f989
Added to database: 08/21/2026, 20:07:45 UTC
Last enriched: 09/10/2026, 17:21:13 UTC
Last updated: 10/06/2026, 18:48:23 UTC
Views: 100
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