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

CVSS 3.1 4.3 MEDIUMEUVD CVSS 3.1 4.3 CVSS 3.1 · [email protected] · Secondary 4.3 MEDIUMCVSS 3.1 · [email protected] · Primary 4.3 MEDIUMCVSS_V3 Publisher rating MODERATEFixed by github.com/go-git/go-git/v5 5.16.5osv · severity unknownFixed by github.com/go-git/go-git/v5 5.16.5KEV status unknown

cve-program · CVE-2026-25934

Published

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.

Read the publisher's advisory

euvd · EUVD-2026-6247

Published

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.

Read the publisher's advisory

nvd · CVE-2026-25934

Published

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.

Read the publisher's advisory

osv · GHSA-37cx-329c-33x3

Published

### Impact 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`](https://git-scm.com/docs/pack-protocol#_packfile_data) 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](https://git-scm.com/docs/pack-format) 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. Note that the lack of verification of the packfile checksum has no impact on the trust relationship between the client and server, which is enforced based on the protocol being used (e.g. TLS in the case of `https://` or known hosts for `ssh://`). In other words, the packfile checksum verification does not provide any security benefits when connecting to a malicious or compromised Git server. ### Patches Users should upgrade to `v5.16.5`, or the latest `v6` [pseudo-version](https://go.dev/ref/mod#pseudo-versions), in order to mitigate this vulnerability. ### Workarounds In case updating to a fixed version of `go-git` is not possible, users can run [git fsck](https://git-scm.com/docs/git-fsck) from the `git` cli to check for data corruption on a given repository. ### Credit Thanks @N0zoM1z0 for finding and reporting this issue privately to the `go-git` project.

Read the publisher's advisory

osv · GO-2026-4473

Published

Improper verification of data integrity values for .idx and .pack files in github.com/go-git/go-git

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-25934

Published

go-git

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "go-git",
                    "product": "go-git",
                    "versions": [
                        {
                            "version": "< 5.16.5",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-6247

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Feb 9, 2026, 10:13:41 PM

dateUpdated: Feb 11, 2026, 9:23:14 PM

11 related source bulletins · separate from aliases

RHSA-2026:37387: Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.22.0 security, enhancement & bug fix update

CVE-2024-25621 · CVE-2024-40635 · CVE-2024-45310 · CVE-2025-8766 · CVE-2025-21613 · CVE-2025-21614 · CVE-2025-22870 · CVE-2025-47911 · CVE-2025-52881 · CVE-2025-54410 · CVE-2025-58058 · CVE-2025-64329 · CVE-2025-66506 · CVE-2026-22772 · CVE-2026-23831 · CVE-2026-24117 · CVE-2026-25680 · CVE-2026-25681 · CVE-2026-25934 · CVE-2026-27136 · CVE-2026-27141 · CVE-2026-27903 · CVE-2026-33540 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33814 · CVE-2026-34986 · CVE-2026-35172 · CVE-2026-35469 · CVE-2026-39821 · CVE-2026-39827 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39833 · CVE-2026-39834 · CVE-2026-39835 · CVE-2026-39883 · CVE-2026-41506 · CVE-2026-41567 · CVE-2026-41568 · CVE-2026-42502 · CVE-2026-42506 · CVE-2026-42508 · CVE-2026-44740 · CVE-2026-45571 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-46598

openSUSE-SU-2026:11694-1: amazon-ssm-agent-3.3.5226.0-1.1 on GA media

CVE-2025-22869 · CVE-2026-25934 · CVE-2026-71556

SUSE-SU-2026:22157-1: Security update for amazon-ssm-agent

CVE-2025-22869 · CVE-2025-22870 · CVE-2025-47913 · CVE-2026-1229 · CVE-2026-25934 · CVE-2026-39821 · CVE-2026-39827 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39833 · CVE-2026-39834 · CVE-2026-39835 · CVE-2026-41506 · CVE-2026-42508 · CVE-2026-44740 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-46598

openSUSE-SU-2026:20809-1: Security update for trivy

CVE-2025-64702 · CVE-2025-69725 · CVE-2026-25934 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986 · CVE-2026-39984 · CVE-2026-41506

SUSE-SU-2026:2468-1: Security update for amazon-ssm-agent

CVE-2025-22869 · CVE-2025-22870 · CVE-2025-47913 · CVE-2026-1229 · CVE-2026-25934 · CVE-2026-39821 · CVE-2026-39827 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39833 · CVE-2026-39834 · CVE-2026-39835 · CVE-2026-41506 · CVE-2026-42508 · CVE-2026-44740 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-46598

SUSE-SU-2026:1411-1: Security update for terraform-provider-local, terraform-provider-random, terraform-provider-tls

CVE-2026-25934 · CVE-2026-33186

SUSE-SU-2026:21793-1: Security update for alloy

CVE-2026-25934 · CVE-2026-26958 · CVE-2026-33186 · CVE-2026-4427

openSUSE-SU-2026:10618-1: alloy-1.15.1-1.1 on GA media

CVE-2026-25934 · CVE-2026-26958 · CVE-2026-33186

openSUSE-SU-2026:20752-1: Security update for alloy

CVE-2026-25934 · CVE-2026-26958 · CVE-2026-33186 · CVE-2026-4427

openSUSE-SU-2026:10651-1: trivy-0.70.0-1.1 on GA media

CVE-2025-69725 · CVE-2026-25934 · CVE-2026-33186 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-34986 · CVE-2026-39984

openSUSE-SU-2026:21079-1: Security update for amazon-ssm-agent

CVE-2025-22869 · CVE-2025-22870 · CVE-2025-47913 · CVE-2026-1229 · CVE-2026-25934 · CVE-2026-39821 · CVE-2026-39827 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39833 · CVE-2026-39834 · CVE-2026-39835 · CVE-2026-41506 · CVE-2026-42508 · CVE-2026-44740 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-46598

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-25934

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-354

Original publisher date fields

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

lastModified: 2026-06-17T10:25:27.243

1 source CPE criteria · context only
  • cpe:2.3:a:go-git_project:go-git:*:*:*:*:*:go:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-37cx-329c-33x3

Published

github.com/go-git/go-git/v5

Go

SEMVER · introduced 0 → fixed 5.16.5

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GO-2026-4473

Published

github.com/go-git/go-git

Go

SEMVER · introduced 0

github.com/go-git/go-git/v4

Go

SEMVER · introduced 0

github.com/go-git/go-git/v5

Go

SEMVER · introduced 0 → fixed 5.16.5

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 19:06 UTC · 254 of 275 readable · 250 fully read · documentation 468/469 current