CVE-2026-62960: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in git-for-windows git
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 an outbound SMB connection during clone or fetch operations if transfer.bundleuri=true. This can lead to exposure of NTLM authentication credentials to an attacker-controlled host. The issue is fixed in version 2.55.0.windows.4.
AI Analysis
Technical Summary
The vulnerability in Git for Windows arises when a remote Git server advertises a bundle URI that triggers functions in bundle-uri.c (transport_get_remote_bundle_uri(), fetch_bundle_uri_internal(), copy_uri_to_file()) during clone or fetch operations with transfer.bundleuri enabled. Non-HTTP(S) URIs are interpreted as local filesystem paths, and file URI prefixes are stripped, allowing a bare UNC path or file URI to cause Windows to initiate an SMB connection to an attacker-controlled share. This results in the exposure of NTLM authentication material to the attacker. The vulnerability is resolved in Git for Windows version 2.55.0.windows.4.
Potential Impact
An attacker controlling a remote Git server can cause a vulnerable Git for Windows client to leak NTLM authentication credentials by triggering an outbound SMB connection. This exposure can lead to credential theft, potentially allowing unauthorized access to network resources. The vulnerability does not impact integrity or availability directly but has a high confidentiality impact.
Mitigation Recommendations
This vulnerability is fixed in Git for Windows version 2.55.0.windows.4. Users should upgrade to this version or later to remediate the issue. No official temporary workaround or mitigation is documented. Patch status is not explicitly confirmed in the provided data, but the fix version is stated, indicating an official fix is available.
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 an outbound SMB connection during clone or fetch operations if transfer.bundleuri=true. This can lead to exposure of NTLM authentication credentials to an attacker-controlled host. The issue is fixed in version 2.55.0.windows.4.
CVSS v3.1
Score 7.4high
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Git for Windows arises when a remote Git server advertises a bundle URI that triggers functions in bundle-uri.c (transport_get_remote_bundle_uri(), fetch_bundle_uri_internal(), copy_uri_to_file()) during clone or fetch operations with transfer.bundleuri enabled. Non-HTTP(S) URIs are interpreted as local filesystem paths, and file URI prefixes are stripped, allowing a bare UNC path or file URI to cause Windows to initiate an SMB connection to an attacker-controlled share. This results in the exposure of NTLM authentication material to the attacker. The vulnerability is resolved in Git for Windows version 2.55.0.windows.4.
Potential Impact
An attacker controlling a remote Git server can cause a vulnerable Git for Windows client to leak NTLM authentication credentials by triggering an outbound SMB connection. This exposure can lead to credential theft, potentially allowing unauthorized access to network resources. The vulnerability does not impact integrity or availability directly but has a high confidentiality impact.
Mitigation Recommendations
This vulnerability is fixed in Git for Windows version 2.55.0.windows.4. Users should upgrade to this version or later to remediate the issue. No official temporary workaround or mitigation is documented. Patch status is not explicitly confirmed in the provided data, but the fix version is stated, indicating an official fix is available.
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
- Remediation Level
- null
Threat ID: 6a88b011acd9273b49a9f989
Added to database: 08/21/2026, 20:07:45 UTC
Last enriched: 08/21/2026, 20:22:27 UTC
Last updated: 08/22/2026, 03:12:22 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.