go-git is a highly extensible git implementation library written in pure Go. Prior to 5.16.5, a vulnerability was discovered in go-git whereby data integrity values for .pack and .idx files were not properly verified. This resulted in go-git potentially consuming corrupted files, which would likely result in unexpected errors such as object not found. For context, clients fetch packfiles from upstream Git servers. Those files contain a checksum of their contents, so that clients can perform integrity checks before consuming it. The pack indexes (.idx) are generated locally by go-git, or the git cli, when new .pack files are received and processed. The integrity checks for both files were not being verified correctly. This vulnerability is fixed in 5.16.5.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Go-git
  • Go-git

No data.

No data.

References
Link Providers
https://github.com/go-git/go-git/releases/tag/v5.16.5 cve-icon cve-icon cve-icon
https://github.com/go-git/go-git/security/advisories/GHSA-37cx-329c-33x3 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-25934 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-25934 cve-icon
History

Thu, 12 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 11 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 10 Feb 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Go-git
Go-git go-git
Vendors & Products Go-git
Go-git go-git

Mon, 09 Feb 2026 22:30:00 +0000

Type Values Removed Values Added
Description go-git is a highly extensible git implementation library written in pure Go. Prior to 5.16.5, a vulnerability was discovered in go-git whereby data integrity values for .pack and .idx files were not properly verified. This resulted in go-git potentially consuming corrupted files, which would likely result in unexpected errors such as object not found. For context, clients fetch packfiles from upstream Git servers. Those files contain a checksum of their contents, so that clients can perform integrity checks before consuming it. The pack indexes (.idx) are generated locally by go-git, or the git cli, when new .pack files are received and processed. The integrity checks for both files were not being verified correctly. This vulnerability is fixed in 5.16.5.
Title go-git improperly verifies data integrity values for .idx and .pack files
Weaknesses CWE-354
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-02-09T22:13:41.974Z

Updated: 2026-02-11T21:23:14.781Z

Reserved: 2026-02-09T16:22:17.786Z

Link: CVE-2026-25934

cve-icon Vulnrichment

Updated: 2026-02-11T21:23:12.504Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-09T23:16:05.937

Modified: 2026-02-10T15:22:54.740

Link: CVE-2026-25934

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-02-09T22:13:41Z

Links: CVE-2026-25934 - Bugzilla