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Fencer Vulns
medium 4.3

CVE-2026-25934 json

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

published 2026-02-09 8 mo ago modified 2026-09-10 1 mo ago also EUVD-2026-6247 , GHSA-37cx-329c-33x3 , GO-2026-4473

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/go-git/go-git/v5 5.16.5
  • go-git_project go-git 5.16.5
  • golang-github-go-git-go-git Debian 14 5.17.0-1

debian advisories DEBIAN-CVE-2026-25934

  • golang-github-go-git-go-git Ubuntu Pro 22.04 LTS 5.4.2-3ubuntu0.1~esm1
  • golang-github-go-git-go-git Ubuntu Pro 24.04 LTS 5.4.2-4ubuntu0.24.04.3+esm2

ubuntu advisories UBUNTU-CVE-2026-25934

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • terraform-provider-aws SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.11.0-150200.6.18.1
  • terraform-provider-tls SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.5.15.1
  • terraform-provider-helm SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.9.0-150200.6.23.1
  • terraform-provider-null SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.6.18.1
  • terraform-provider-local SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.0.0-150200.6.17.1
  • terraform-provider-google SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.43.0-150200.6.12.1
  • terraform-provider-random SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.6.15.1
  • terraform-provider-azurerm SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.32.0-150200.6.12.1

suse advisories SUSE-SU-2026:3056-1SUSE-SU-2026:2468-1SUSE-SU-2026:2467-1SUSE-SU-2026:22157-1SUSE-SU-2026:2438-1SUSE-SU-2026:1411-1

  • amazon-ssm-agent openSUSE Tumbleweed 3.3.5226.0-1.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • amazon-ssm-agent openSUSE Leap 16.0 3.3.4624.0-160000.1.1
  • trivy openSUSE Tumbleweed 0.70.0-1.1
  • alloy openSUSE Tumbleweed 1.15.1-1.1

opensuse advisories openSUSE-SU-2026:11694-1openSUSE-SU-2026:21483-1openSUSE-SU-2026:21079-1openSUSE-SU-2026:10651-1openSUSE-SU-2026:10618-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-25934 updated cvss 4.3

go-git/go-git: go-git: Data integrity issue due to improper verification of pack and index files

  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 assisted/agent-preinstall-image-builder-rhel9 Red Hat Builds for Red Hat OpenShift openshift-builds/openshift-builds-waiters-rhel9, openshift-builds/openshift-builds-webhook-rhel9, openshift-builds/openshift-builds-controller-rhel9, openshift-builds/openshift-builds-git-cloner-rhel9, openshift-builds/openshift-builds-image-bundler-rhel9, openshift-builds/openshift-builds-image-processing-rhel9 Red Hat Confidential Compute Attestation openshift-sandboxed-containers/osc-must-gather-rhel9 Red Hat External Secrets Operator for Red Hat OpenShift external-secrets-operator/external-secrets-rhel9, external-secrets-operator/bitwarden-sdk-server-rhel9, external-secrets-operator/external-secrets-operator-rhel9, external-secrets-operator/external-secrets-operator-bundle Red Hat Kernel Module Management Operator for Red Hat Openshift kmm/kernel-module-management-must-gather-rhel9 Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/cluster-logging-rhel9-operator
    +31 more products
    Red Hat Machine Deletion Remediation Operator workload-availability/machine-deletion-remediation-rhel9-operator, workload-availability/machine-deletion-remediation-operator-bundle Red Hat Migration Toolkit for Containers rhmtc/openshift-migration-log-reader-rhel8, rhmtc/openshift-migration-must-gather-rhel8 Red Hat Migration Toolkit for Virtualization mtv-candidate/mtv-must-gather-rhel8, migration-toolkit-virtualization/mtv-must-gather-rhel8 Red Hat Multicluster Engine for Kubernetes multicluster-engine/must-gather-rhel9, multicluster-engine/hypershift-cli-rhel9, multicluster-engine/hypershift-rhel9-operator, multicluster-engine/cluster-image-set-controller-rhel9 Red Hat Network Observability Operator network-observability/network-observability-cli-rhel9 Red Hat Node HealthCheck Operator workload-availability/node-healthcheck-must-gather-rhel9 Red Hat OpenShift API for Data Protection oadp/oadp-mustgather-rhel9 Red Hat OpenShift Developer Tools and Services ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9, ocp-tools-4/jenkins-agent-base-rhel8, ocp-tools-4/jenkins-agent-base-rhel9 Red Hat OpenShift Pipelines openshift-pipelines/pipelines-nop-rhel8, openshift-pipelines/pipelines-events-rhel8, openshift-pipelines/pipelines-webhook-rhel8, openshift-pipelines/pipelines-resolvers-rhel8, openshift-pipelines/pipelines-controller-rhel8, openshift-pipelines/pipelines-entrypoint-rhel8, +2 more Red Hat OpenShift Serverless openshift-serverless-clients, openshift-serverless-1/kn-client-kn-rhel9, openshift-serverless-1/serverless-must-gather-rhel9, openshift-serverless-1/kn-plugin-func-func-util-rhel9 Red Hat OpenShift Service Mesh 2 openshift-service-mesh/istio-must-gather-rhel9 Red Hat OpenShift Service Mesh 3 openshift-service-mesh/istio-must-gather-rhel9 Red Hat Pen Drive Powered by Red Hat Lightspeed pen-drive/pen-drive-scanner-rhel9 Red Hat Power monitoring for Red Hat OpenShift openshift-power-monitoring/power-monitoring-rhel9-operator Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/acm-must-gather-rhel9, rhacm2/kube-state-metrics-rhel9, rhacm2/submariner-rhel9-operator, rhacm2/submariner-operator-bundle, rhacm2/multicluster-operators-subscription-rhel9 Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel8, advanced-cluster-security/rhacs-roxctl-rhel8, advanced-cluster-security/rhacs-scanner-rhel8, advanced-cluster-security/rhacs-rhel8-operator, advanced-cluster-security/rhacs-scanner-v4-rhel8, advanced-cluster-security/rhacs-scanner-slim-rhel8 Red Hat Ansible Automation Platform 2 ansible-automation-platform-24/aap-must-gather-rhel8, ansible-automation-platform-25/aap-must-gather-rhel8, ansible-automation-platform-26/aap-must-gather-rhel9 Red Hat Build of Kueue kueue/kueue-must-gather-rhel9 Red Hat Edge Manager 1 flightctl, rhem/flightctl-api-rhel9, rhem/flightctl-worker-rhel9, rhem/flightctl-db-setup-rhel9, rhem/flightctl-periodic-rhel9, rhem/flightctl-pam-issuer-rhel9, +5 more Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more Red Hat Enterprise Linux 9 grafana, grafana-selinux Red Hat OpenShift AI (RHOAI) rhoai/odh-must-gather-rhel9, rhoai/odh-pipeline-runtime-minimal-cpu-py312-rhel9, rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9, rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9, rhoai/odh-workbench-jupyter-minimal-cpu-py312-rhel9, rhoai/odh-data-science-pipelines-argo-argoexec-rhel8, +17 more Red Hat OpenShift Container Platform 4 cri-o, openshift, openshift-clients, openshift-kubelet, openshift4/ose-cli, openshift-hyperkube, +49 more Red Hat OpenShift Dev Workspaces Operator devworkspace/devworkspace-rhel9-operator, devworkspace/devworkspace-operator-bundle, devworkspace/devworkspace-project-clone-rhel9 Red Hat OpenShift for Windows Containers openshift4-wincw/windows-machine-config-rhel9-operator, openshift4-wincw/windows-machine-config-operator-bundle Red Hat OpenShift GitOps openshift-gitops-1/argocd-rhel8, openshift-gitops-1/argocd-rhel9, openshift-gitops-1/gitops-rhel8, openshift-gitops-1/must-gather-rhel8, openshift-gitops-1/argocd-agent-rhel8, openshift-gitops-1/gitops-rhel8-operator, +1 more Red Hat OpenShift Virtualization 4 container-native-virtualization/cluster-network-addons-operator, container-native-virtualization/cluster-network-addons-operator-rhel9 Red Hat OpenStack Platform 16.2 rhosp-rhel8/osp-director-agent, rhosp-rhel8/osp-director-operator, rhosp-rhel8/osp-director-downloader, rhosp-rhel8/osp-director-operator-bundle Red Hat OpenStack Platform 17.1 rhosp-rhel9/osp-director-agent, rhosp-rhel9/osp-director-operator, rhosp-rhel9/osp-director-operator-bundle Red Hat OpenStack Platform 18.0 rhoso-operators/openstack-operator-bundle Red Hat Trusted Artifact Signer rhtas/gitsign-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat Openshift Data Foundation 4.22 odf4/cephcsi-rhel9 1782932114, odf4/odf-cli-rhel9 1783537001, odf4/mcg-core-rhel9 1783536000, odf4/odf-drbd-rhel9 1783537392, odf4/odf-console-rhel9 1783537586, odf4/devicefinder-rhel9 1782932104, +21 more
    fixed: vendor fix RHSA-2026:37387
  • Red Hat Openshift Data Foundation 4.22 odf4/mcg-operator-bundle 1783538986, odf4/ocs-operator-bundle 1783539176, odf4/odf-operator-bundle 1783539513, odf4/cephcsi-operator-bundle 1783538908, odf4/odr-hub-operator-bundle 1783539596, odf4/rook-ceph-operator-bundle 1783539714, +10 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
go github.com/go-git/go-git/v5
<5.16.5
5.16.5
go github.com/go-git/go-git
all versions
 no fix listed
go github.com/go-git/go-git/v4
all versions
 no fix listed

Affected products

  • go-git go-git

Classification

Weakness
  • CWE-354 Improper Validation of Integrity Check Value

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.