GHSA-m7cr-m3pv-hgrpPublished

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

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cve-program · CVE-2026-45570

Published

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.1 and 6.0.0-alpha.4, 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. 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. This vulnerability is fixed in 5.19.1 and 6.0.0-alpha.4.

Source published: 27 May 2026 14:59:17 UTC
Source modified: 28 May 2026 15:12:03 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

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

euvd · EUVD-2026-32546

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: May 27, 2026, 2:59:17 PM

dateUpdated: May 28, 2026, 3:12:03 PM

3 related source bulletins · separate from aliases

RHSA-2026:67543: Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.17.2 security update

CVE-2026-41178 · CVE-2026-45570 · CVE-2026-56852 · CVE-2026-66780 · CVE-2026-71556 · CVE-2026-75899 · CVE-2026-75931 · CVE-2026-75975 · CVE-2026-76172 · CVE-2026-89060

msrc_CVE-2026-45570: go-git: Improper single-quote escaping in go-git SSH transport

CVE-2026-45570

openSUSE-SU-2026:10831-1: flux2-cli-2.8.8-1.1 on GA media

CVE-2026-45570 · CVE-2026-45571

Source published: May 27, 2026, 2:59:17 PM (timezone not stated)
Source modified: May 28, 2026, 3:12:03 PM (timezone not stated)
Saved here: 14 Nov 2026 00:08:50 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD 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

nvd · CVE-2026-45570

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-116

Original publisher date fields

published: 2026-05-27T15:16:30.240

lastModified: 2026-06-17T10:52:13.177

4 source CPE criteria · context only

cpe:2.3:a:go-git_project:go-git:*:*:*:*:*:go:*:*
cpe:2.3:a:go-git_project:go-git:6.0.0:alpha1:*:*:*:go:*:*
cpe:2.3:a:go-git_project:go-git:6.0.0:alpha2:*:*:*:go:*:*
cpe:2.3:a:go-git_project:go-git:6.0.0:alpha3:*:*:*:go:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 27 May 2026 15:16:30 UTC
Source modified: 17 Jun 2026 10:52:13 UTC
Saved here: 25 Oct 2026 10:17:33 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

osv · GHSA-m7cr-m3pv-hgrp

Published

### 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 `sq_quote_buf` 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 `$SSH_ORIGINAL_COMMAND`), 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 `go-git`: the same bytes can be produced by any SSH client. The change in `go-git` is defense-in-depth that restores parity with canonical Git's wire format and prevents `go-git` from being a vehicle for reaching shell-evaluating servers through attacker-influenced repository paths. ### Patches Users should upgrade to a patched version in order to mitigate this issue. The fix ports `sq_quote_buf` from canonical Git into `go-git`'s SSH transport so that the wire output is byte-identical to what `git` itself would send for the same input. Versions prior to `v5` are likely to be affected, users are recommended to upgrade to a supported go-git version. ### Credit Thanks to @N0zoM1z0 for reporting this to the `go-git` project. :bow:

Source published: 19 May 2026 15:21:01 UTC
Source modified: 10 Sep 2026 03:51:06 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V4 · 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

Publisher rating · LOW

osv · GO-2026-5496

Published

Improper single-quote escaping in go-git SSH transport in github.com/go-git/go-git

Source published: 7 Jul 2026 16:52:19 UTC
Source modified: 10 Jul 2026 05:44:31 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.