CVE-2026-45022

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 over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository. This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed. This vulnerability is fixed in 5.19.0 and 6.0.0-alpha.3.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/go-git/go-git/security/advisories/GHSA-389r-gv7p-r3rp	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	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::*

History

No history.

Information

Published : 2026-05-27 15:16

Updated : 2026-06-17 10:51

NVD link : CVE-2026-45022

Mitre link : CVE-2026-45022

CVE.ORG link : CVE-2026-45022

JSON object : View

Products Affected

go-git_project

go-git

CWE

CWE-180

Incorrect Behavior Order: Validate Before Canonicalize

CWE-345

Insufficient Verification of Data Authenticity

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