CVE-2026-45022: go-git is an extensible git implementation library written in pure Go

Q: How do I fix CVE-2026-45022?

go-git: upgrade to 5.19.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-45022 being exploited?

CVE-2026-45022 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-2026-45022 affect?

CVE-2026-45022 affects go-git. Severity is high (CVSS 7.5). go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malfor

Q: How urgent is CVE-2026-45022?

Priority 33/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-45022 is a high-severity flaw (CVSS 7.5) 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 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object. Additionally, go-git’s commit signing and verification logic operates ov

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-180, CWE-345
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 10:51 UTCUpdated Record last modified

go-git project go-git UPGRADE

Affected: < 5.19.0 · 6.0.0 alpha1 · 6.0.0 alpha2

Fixed in: 5.19.0

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 5.19.0 (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-2026-45022?

go-git: upgrade to 5.19.0. Exact commands for each OS are on this page.

Is CVE-2026-45022 being exploited?

CVE-2026-45022 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-2026-45022 affect?

CVE-2026-45022 affects go-git. Severity is high (CVSS 7.5). go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malfor

How urgent is CVE-2026-45022?

Priority 33/100. High severity; Remotely exploitable, no login, no user action

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-2026-45570 CRITICAL 9.6 UPGRADE go-git is an extensible git implementation library written in pure Go

References

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