CVE-2026-45571

go-git: Crafted repositories may modify main and submodule .git directories

CVE-2026-45571 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-45571, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.4

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0030

22nd percentile

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.1 and 6.0.0-alpha.4, a path validation issue in go-git could allow crafted repository data to affect files outside the intended checkout target, including the repository's .git directory. These validations were introduced in upstream Git years ago, so the vulnerability arose from go-git drifting from those checks. This vulnerability is fixed in 5.19.1 and 6.0.0-alpha.4.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
golang-github-go-git-go-git · Debian 14	5.19.1-1	DEBIAN-CVE-2026-45571	Jun 24, 2026
golang-github-go-git-go-git-v6 · Debian 14	6.0.0~alpha4-1	DEBIAN-CVE-2026-45571	Jun 24, 2026
govulncheck-vulndb · opensuse-leap 16.0	0.0.20260727T201416-160000.1.1	OPENSUSE-SU-2026:21551-1	Aug 10, 2026
govulncheck-vulndb · sles 16.0	0.0.20260727T201416-160000.1.1	SUSE-SU-2026:23227-1	Aug 10, 2026

Details

Published
May 27, 2026
Weakness
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45571

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