go-git: Credential leak via cross-host redirect in smart HTTP transport — CVE-2026-41506

Summary

### Impact `go-git` may leak HTTP authentication credentials when following redirects during smart-HTTP clone and fetch operations. If a remote repository responds to the initial `/info/refs` request with a redirect to a different host, go-git updates the session endpoint to the redirected location and reuses the original authentication for subsequent requests. This can result in the credentials (e.g. Authorization…

Product

go: github.com/go-git/go-git/v5 | go: github.com/go-git/go-git/v6

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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