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Vulnerability record · CVE-2020-12279 · published 27 April 2020

CVE-2020-12279: Libgit2 vulnerability

Libgit2 · Libgit2

An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. checkout.c mishandles equivalent filenames that exist because of NTFS short names. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1353.

9.8 CVSS 3.1 Critical EPSS 5.2% · top 7.8% CWE-706 · CWE-706
9.8CVSS 3.1 base score, v2 7.5
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. checkout.c mishandles equivalent filenames that exist because of NTFS short names. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1353.

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

Affected products

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

References

LinkTags
https://github.com/git/git/security/advisories/GHSA-589j-mmg9-733v PatchThird Party Advisory
https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4 PatchThird Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.28.4 Release NotesThird Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.99.0 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00034.html
https://github.com/git/git/security/advisories/GHSA-589j-mmg9-733v PatchThird Party Advisory
https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4 PatchThird Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.28.4 Release NotesThird Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.99.0 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00034.html

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Source: NIST National Vulnerability Database (record CVE-2020-12279), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.