CVE-2021-21237: Git LFS is a command line extension for managing large files with Git

Q: How do I fix CVE-2021-21237?

git large file storage: upgrade to 2.13.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-21237 being exploited?

CVE-2021-21237 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-21237 affect?

CVE-2021-21237 affects git large file storage. Severity is high (CVSS 7.2). 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 attacke

Routine

HIGH 7.2UPGRADE

CVE-2021-21237 is a high-severity flaw (CVSS 7.2) affecting git large file storage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-426
Published	2021-01-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: git large file storage project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-01-15 18:15 UTCPublished CVE record published
2026-06-17 03:35 UTCUpdated Record last modified

git large file storage project git large file storage UPGRADE

Affected: < 2.13.2

Fixed in: 2.13.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy git-large-file-storage || rpm -q git-large-file-storage || git-large-file-storage --version

2. UPGRADE to 2.13.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade git-large-file-storage

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade git-large-file-storage

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-21237?

git large file storage: upgrade to 2.13.2. Exact commands for each OS are on this page.

Is CVE-2021-21237 being exploited?

CVE-2021-21237 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-21237 affect?

CVE-2021-21237 affects git large file storage. Severity is high (CVSS 7.2). 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 attacke

How urgent is CVE-2021-21237?

Priority 35/100. High severity

Software pages

Windows vulnerabilities · Git vulnerabilities

Related CVEs

CVE-2022-24826 CRITICAL 9.8 UPGRADE On Windows, if Git LFS operates on a malicious repository with a `..exe` file as well as a file named `git.exe
CVE-2020-27955 CRITICAL 9.8 DOWNGRADE Git LFS 2.12.0 allows Remote Code Execution.

References

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