go-git up to 5.19.0/6.0.0-alpha.3 path traversal

Summaryinfo

A vulnerability classified as critical has been found in go-git up to 5.19.0/6.0.0-alpha.3. This affects an unknown part. This manipulation causes path traversal. The identification of this vulnerability is CVE-2026-45571. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in go-git up to 5.19.0/6.0.0-alpha.3. It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-45571 since 05/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 5.19.1 or 6.0.0-alpha.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-32544). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Versioning Software

Name

• go-git

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19.0
• 6.0.0-alpha.0
• 6.0.0-alpha.1
• 6.0.0-alpha.2
• 6.0.0-alpha.3

Website

• Product: https://github.com/go-git/go-git/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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