Git LFS can execute a Git binary from the current directory on Windows
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/git-lfs/git-lfsGo | < 2.13.2 | 2.13.2 |
Affected products
3- osv-coords2 versions
< 2.13.2+ 1 more
- (no CPE)range: < 2.13.2
- (no CPE)range: < 2.13.2
Patches
Vulnerability mechanics
Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
7- github.com/advisories/GHSA-cx3w-xqmc-84g5ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21237ghsaADVISORY
- cve.mitre.org/cgi-bin/cvename.cgighsax_refsource_MISCWEB
- github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72aghsax_refsource_MISCWEB
- github.com/git-lfs/git-lfs/releases/tag/v2.13.2ghsax_refsource_MISCWEB
- github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5ghsax_refsource_CONFIRMWEB
- pkg.go.dev/vuln/GO-2021-0098ghsaWEB
News mentions
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