CVE-2026-45570: go-git is an extensible git implementation library written in pure Go

Q: How do I fix CVE-2026-45570?

go-git: upgrade to 5.19.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-45570 being exploited?

CVE-2026-45570 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-45570 affect?

CVE-2026-45570 affects go-git. Severity is critical (CVSS 9.6). 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 quo

Q: How urgent is CVE-2026-45570?

Priority 41/100. Critical severity

This month

CRITICAL 9.6UPGRADE

CVE-2026-45570 is a critical-severity flaw (CVSS 9.6) affecting go-git. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-116
Published	2026-05-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: go-git project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-27 15:16 UTCPublished CVE record published
2026-06-17 10:52 UTCUpdated Record last modified

go-git project go-git UPGRADE

Affected: < 5.19.1 · 6.0.0 alpha1 · 6.0.0 alpha2 · 6.0.0 alpha3

Fixed in: 5.19.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy go-git || rpm -q go-git || go-git --version

2. UPGRADE to 5.19.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade go-git

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade go-git

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-45570?

go-git: upgrade to 5.19.1. Exact commands for each OS are on this page.

Is CVE-2026-45570 being exploited?

CVE-2026-45570 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-45570 affect?

CVE-2026-45570 affects go-git. Severity is critical (CVSS 9.6). 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 quo

How urgent is CVE-2026-45570?

Priority 41/100. Critical severity

Software pages

Git vulnerabilities

Related CVEs

CVE-2026-45571 MEDIUM 5.4 UPGRADE go-git is an extensible git implementation library written in pure Go
CVE-2026-45022 HIGH 7.5 UPGRADE go-git is an extensible git implementation library written in pure Go
CVE-2026-41506 MEDIUM 4.7 UPGRADE go-git is an extensible git implementation library written in pure Go

References

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