CVE-2026-25934

go-git improperly verifies data integrity values for .idx and .pack files

Published Feb 9, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-37cx-329c-33x3 go-git improperly verifies data integrity values for .idx and .pack files
Ubuntu USN Ubuntu USN USN-8088-1 go-git vulnerabilities
History
Type Values Removed Values Added
First Time appeared Go-git Project
Go-git Project go-git
CPEs cpe:2.3:a:go-git_project:go-git:*:*:*:*:*:go:*:*
Vendors & Products Go-git Project
Go-git Project go-git
Type Values Removed Values Added
Metrics ssvc

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

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Feb 11, 2026, 9:23 PM
Reserved
Feb 9, 2026, 4:22 PM
Status
Analyzed
Published
Feb 9, 2026, 11:16 PM
Modified
Jun 17, 2026, 10:25 AM
Severity
Moderate
Public date
Feb 9, 2026, 10:13 PM