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Vulnerability record · CVE-2017-17831 · published 21 December 2017

CVE-2017-17831: Git large file storage project git large file storage improper input validation vulnerability

GGit Large File Storage Project · Git Large File Storage

GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.

8.8 CVSS 3.0 High EPSS 3.7% · top 10.7% CWE-20 · Improper input validation
8.8CVSS 3.0 base score, v2 6.8
3.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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
http://blog.recurity-labs.com/2017-08-10/scm-vulns ExploitThird Party Advisory
http://www.securityfocus.com/bid/102926 Third Party AdvisoryVDB Entry
https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html Third Party Advisory
https://github.com/git-lfs/git-lfs/pull/2242 PatchThird Party Advisory
https://github.com/git-lfs/git-lfs/releases/tag/v2.1.1 Release NotesThird Party Advisory
http://blog.recurity-labs.com/2017-08-10/scm-vulns ExploitThird Party Advisory
http://www.securityfocus.com/bid/102926 Third Party AdvisoryVDB Entry
https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html Third Party Advisory
https://github.com/git-lfs/git-lfs/pull/2242 PatchThird Party Advisory
https://github.com/git-lfs/git-lfs/releases/tag/v2.1.1 Release NotesThird 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-2017-17831), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.