CVE-2026-45571
Medium
Description
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.1 and 6.0.0-alpha.4, a path validation issue in go-git could allow crafted repository data to affect files outside the intended checkout target, including the repository's .git directory. These validations were introduced in upstream Git years ago, so the vulnerability arose from go-git drifting from those checks. This vulnerability is fixed in 5.19.1 and 6.0.0-alpha.4.
SeverityMedium
CVSS5.4
Exploit probability—
ProductGo-git
PublishedMay 27, 2026
First seenMay 27, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- go-git_project go-git5.19.1 or later
- github.com/go-git/go-git/v55.19.1 or later
- github.com/go-git/go-git/v66.0.0-alpha.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| go-git_project go-git | v < 5.19.1, 6.0.0 | 5.19.1 |
| github.com/go-git/go-git/v5Go | v < 5.19.1 | 5.19.1 |
| github.com/go-git/go-git/v6Go | v < 6.0.0-alpha.4 | 6.0.0-alpha.4 |
| github.com/go-git/go-gitGo | v ≤ 44.7.0 | — |
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