CVE-2026-45571

go-git: Crafted repositories may modify main and submodule .git directories

State: Published
Severity: 5.4 Medium
Published: May 27, 2026
Updated: May 27, 2026
Reserved: May 12, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
go-gitgo-git	< 5.19.1Affected >= 6.0.0-alpha.1, < 6.0.0-alpha.4Affected

References

https://github.com/go-git/go-git/security/advisories/GHSA-crhj-59gh-8x96

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