CVE-2026-45022
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
27/05/2026
Last modified:
04/06/2026
Description
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.
Impact
Base Score 4.0
7.00
Severity 4.0
HIGH
Base Score 3.x
7.50
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:go-git_project:go-git:*:*:*:*:*:go:*:* | 5.19.0 (excluding) | |
| 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:*:* |
To consult the complete list of CPE names with products and versions, see this page