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Vulnerability record · CVE-2021-21237 · published 15 January 2021

CVE-2021-21237: Git large file storage project git large file storage untrusted search path vulnerability

GGit Large File Storage Project · Git Large File Storage

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.

7.8 CVSS 3.1 High EPSS 0.43% · top 65.1% CWE-426 · Untrusted search path
7.8CVSS 3.1 base score, v2 4.6
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955 Third Party Advisory
https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a PatchThird Party Advisory
https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2 Third Party Advisory
https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5 Third Party Advisory
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955 Third Party Advisory
https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a PatchThird Party Advisory
https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2 Third Party Advisory
https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-21237), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.