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TI-2021-04340 Aliases CVE-2021-21237GHSA-cx3w-xqmc-84g5

Git LFS can execute a Git binary from the current directory on Windows

Priority LOW 34CWE-426Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-426.

Summary

Git LFS is a command line extension for managing large files with Git. On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems. This is the result of an incomplete fix for CVE-2020-27955. This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Other than avoiding untrusted repositories or using a different operating system, there is no workaround. This is fixed in v2.13.2.

Why it matters now

EPSS 0.00453 39th percentileScored 2026-11-07
Fix Fixed git-lfs (git-lfs): 2.13.2github.com/git-lfs/git-lfs (Go): 2.13.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
git-lfsgit-lfsbefore 2.13.22.13.2Patch availableCNA
—github.com/git-lfs/git-lfs (Go)before 2.13.22.13.2Patch availableGHSA-cx3w-xqmc-84g5
  • git-lfs Vendorgit-lfs Affected before 2.13.2 Fixed in 2.13.2 Patch available CNA
  • github.com/git-lfs/git-lfs (Go) Vendor— Affected before 2.13.2 Fixed in 2.13.2 Patch available GHSA-cx3w-xqmc-84g5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:git_large_file_storage_project:git_large_file_storage:*:*:*:*:*:*:*:*before 2.13.2VulnerableGit Large File Storage Project

Remediation

  • Fix · CNA git-lfs (git-lfs) Fixed in 2.13.2
  • Fix · GHSA-cx3w-xqmc-84g5 github.com/git-lfs/git-lfs (Go) Fixed in 2.13.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21237
  2. 2026-10-03 Alias added: GHSA-cx3w-xqmc-84g5

References

Patch 1

Advisory 4

Other 2

  • TI-2025-19562 Git LFS may write to arbitrary files via crafted symlinks CVSS 4.0HIGH 8.6
  • TI-2024-35726 Git LFS permits exfiltration of credentials via crafted HTTP URLs CVSS 4.0HIGH 8.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences