go-git: Missing validation decoding Index v4 files leads to panic
Priority LOW 13CWE-129Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 41 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Fix Partial go-git (go-git): 5.17.1github.com/go-git/go-git/v5 (Go): 5.17.1Red Hat: 41 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| go-git | go-git | before 5.17.1 | 5.17.1 | Patch available | CNA |
| — | github.com/go-git/go-git/v5 (Go) | before 5.17.1 | 5.17.1 | Patch available | GHSA-gm2x-2g9h-ccm8 |
- go-git Vendorgo-git Affected before 5.17.1 Fixed in 5.17.1 Patch available CNA
- github.com/go-git/go-git/v5 (Go) Vendor— Affected before 5.17.1 Fixed in 5.17.1 Patch available GHSA-gm2x-2g9h-ccm8
Remediation
- Fix · CNA go-git (go-git) Fixed in 5.17.1
- Fix · GHSA-gm2x-2g9h-ccm8 github.com/go-git/go-git/v5 (Go) Fixed in 5.17.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Assisted Installer for Red Hat OpenShift Container Platform 2 | Affected | No fix yet: Fix deferred |
| Builds for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Confidential Compute Attestation | Affected | No fix yet: Fix deferred |
| External Secrets Operator for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Kernel Module Management Operator for Red Hat Openshift | Affected | No fix yet: Fix deferred |
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Logical Volume Manager Storage | Affected | No fix yet: Fix deferred |
| Machine Deletion Remediation Operator | Affected | No fix yet: Fix deferred |
| Migration Toolkit for Containers | Affected | No fix yet: Fix deferred |
| Migration Toolkit for Virtualization | Affected | No fix yet: Fix deferred |
| Multicluster Engine for Kubernetes | Affected | No fix yet: Fix deferred |
| Network Observability Operator | Affected | No fix yet: Fix deferred |
| Node HealthCheck Operator | Affected | No fix yet: Fix deferred |
| OpenShift API for Data Protection | Affected | No fix yet: Fix deferred |
| OpenShift Developer Tools and Services | Affected | No fix yet: Fix deferred |
| OpenShift Pipelines | Affected | No fix yet: Fix deferred |
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 2 | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 3 | Affected | No fix yet: Fix deferred |
| Pen Drive Powered by Red Hat Lightspeed | Affected | No fix yet: Fix deferred |
| Power monitoring for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Red Hat AI Inference Server | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Security 4 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Build of Kueue | Affected | No fix yet: Fix deferred |
| Red Hat Edge Manager 1 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Workspaces Operator | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift GitOps | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Virtualization 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift for Windows Containers | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 17.1 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 18.0 | Affected | No fix yet: Fix deferred |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Artifact Signer | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-33762
- 2026-10-03 Alias added: GHSA-gm2x-2g9h-ccm8
- 2026-11-02 1 new reference · CNA
- 2026-11-02 1 new reference · GHSA-gm2x-2g9h-ccm8
References
Advisory 2
More Go-git vulnerabilities
- TI-2023-27070 Maliciously crafted Git server replies can lead to path traversal and RCE on go-git clients CVSS 3.1CRITICAL 9.8
- TI-2025-15573 go-git has an Argument Injection via the URL field CVSS 4.0CRITICAL 9.2
- TI-2025-15574 go-git clients vulnerable to DoS via maliciously crafted Git server replies CVSS 3.1HIGH 7.5
- TI-2023-27069 Maliciously crafted Git server replies can cause DoS on go-git clients CVSS 3.1HIGH 7.5
- TI-2026-30091 go-git Credential leak via cross-host redirect in smart HTTP transport CVSS 3.1HIGH 7.4
- TI-2026-32877 go-git: Improper parsing of specially crafted objects may lead to inconsistent interpretation compared to upstream Git CVSS 4.0HIGH 7.0
Sources
- CVE-2026-33762 · CVE Program
- CVE-2026-33762 · NVD
- FIRST EPSS
- GHSA-gm2x-2g9h-ccm8 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-33762 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences