# CVE-2026-71557: go-git: Malicious reference names may modify files outside the reference storage

CVE-2026-71557 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-71557, released August 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-71557
- Priority: Routine
- CVSS: 6.3 (Moderate)
- EPSS: 0.0041
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 7, 2026
- Weakness: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71557

## Description

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, reference names are not sanitized before being used to construct on-disk paths under the reference storage directory, so a maliciously crafted reference name (for example containing directory-traversal sequences) can cause go-git to write files outside the intended reference storage directory. Versions 5.19.2 and 6.0.0-alpha.5 fix the issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | alloy opensuse-leap 16.0 | 1.19.2-160000.1.1 | [OPENSUSE-SU-2026:22032-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22032-1.md) | Oct 6, 2026 |
| Linux | alloy sles 15.7 | 1.19.2-150700.15.29.1 | [SUSE-SU-2026:4408-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4408-1.md) | Oct 1, 2026 |
| Linux | alloy sles 16.0 | 1.19.2-160000.1.1 | [SUSE-SU-2026:24148-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24148-1.md) | Oct 6, 2026 |
| Linux | amazon-ssm-agent amzn 2023 | 3.3.5226.0-1.amzn2023 | [ALAS2023-2026-3149](https://patchblox.com/security/data/fix/linux/alas2023-2026-3149.md) | Sep 30, 2026 |
| Linux | amazon-ssm-agent opensuse-leap 16.0 | 3.3.5390.0-160000.1.1 | [OPENSUSE-SU-2026:21884-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21884-1.md) | Sep 20, 2026 |
| Linux | amazon-ssm-agent sles 15.6 | 3.3.5226.0-150000.5.40.1 | [SUSE-SU-2026:4082-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4082-1.md) | Sep 8, 2026 |
| Linux | amazon-ssm-agent sles 15.7 | 3.3.5226.0-150000.5.40.1 | [SUSE-SU-2026:4082-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4082-1.md) | Sep 8, 2026 |
| Linux | golang-github-go-git-go-git Debian 14 | 5.19.2-1 | [DEBIAN-CVE-2026-71557](https://patchblox.com/security/data/fix/linux/debian-cve-2026-71557.md) | Aug 13, 2026 |
| Linux | golang-github-go-git-go-git-v6 Debian 14 | 6.0.0~alpha.5-1 | [DEBIAN-CVE-2026-71557](https://patchblox.com/security/data/fix/linux/debian-cve-2026-71557.md) | Aug 13, 2026 |
| Linux | govulncheck-vulndb opensuse-leap 16.0 | 0.0.20260827T195228-160000.1.1 | [OPENSUSE-SU-2026:21761-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21761-1.md) | Sep 4, 2026 |
| Linux | govulncheck-vulndb sles 16.0 | 0.0.20260827T195228-160000.1.1 | [SUSE-SU-2026:23625-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23625-1.md) | Sep 4, 2026 |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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