go-git: Improper single-quote escaping in go-git SSH transport

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

2.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L · score source

EPSS

• CVE-2026-45570: 0.36% estimated exploitation activity in the next 30 days; percentile 30.45 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact go-git's SSH transport constructs the remote exec command by wrapping the repository path in single quotes without escaping single quotes embedded inside the path. This diverges from canonical Git, which shell-quotes the path through sqquotebuf so that an embedded ' becomes the '\'' close-escape-reopen sequence and the whole path round-trips as a single quoted argument. A repository path containing a single quote can therefore break out of the quoted region in the exec command and be appended as additional shell tokens. On SSH servers that evaluate the exec command through a shell (for example a user account whose login shell is /bin/sh or /bin/bash, or a ForceCommand wrapper that re-evaluates $SSHORIGINALCOMMAND), those additional tokens execute in that account's command-execution context. SSH servers that tokenize the exec command without shell evaluation, including the canonical git-shell setup, are not affected. The vulnerable behaviour is on the SSH server side, not in…

Published by the source

19 May 2026, 15:21 UTC

Last modified by the source

8 Jun 2026, 23:43 UTC

Source last checked

26 Oct 2026, 15:23 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-m7cr-m3pv-hgrp

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# Patch Next advisory brief: CVE-2026-45570

Advisory: go-git: Improper single-quote escaping in go-git SSH transport
IDs: CVE-2026-45570, GHSA-m7cr-m3pv-hgrp
Record: https://patchnext.com/advisories/cve-2026-45570 (revision 1, source checked 26 Oct 2026, 15:23 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 2.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/go-git/go-git/v6 6.0.0-alpha.4; github.com/go-git/go-git/v5 5.19.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/go-git/go-git/v6: affected <= 6.0.0-alpha.3; fixed in 6.0.0-alpha.4
- Go github.com/go-git/go-git/v5: affected <= 5.19.0; fixed in 5.19.1
- Go github.com/go-git/go-git: affected <= 4.7.0

## Suggested inspection (read-only)
- Go github.com/go-git/go-git/v6: check the installed version with your package manager.
- Go github.com/go-git/go-git/v5: check the installed version with your package manager.
- Go github.com/go-git/go-git: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/go-git/go-git/v6, github.com/go-git/go-git/v5, github.com/go-git/go-git.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-m7cr-m3pv-hgrp (GitHub-reviewed advisory GHSA-m7cr-m3pv-hgrp lists affected ranges: Go github.com/go-git/go-git/v5 >=0 =0 =0 <=4.7.0)

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