medium6.3
CVE-2026-71557
go-git: Malicious reference names may modify files outside the reference storage
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/go-git/go-git/v5 | <= 5.19.1 | 5.19.2 |
| go | github.com/go-git/go-git/v6 | <= 6.0.0-alpha.4 | 6.0.0-alpha.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-qgq7-7hm3-q39j
- https://github.com/go-git/go-git/security/advisories/GHSA-qgq7-7hm3-q39j
- https://github.com/go-git/go-git/pull/2247
- https://github.com/go-git/go-git/pull/2254
- https://github.com/go-git/go-git/commit/4a0e66d555de5f9a30c31e2df64f445f42bd01e7
- https://github.com/go-git/go-git/commit/da9f7d8a0e98b475600177348d6ece384a370f36
- https://github.com/go-git/go-git/releases/tag/v5.19.2
- https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5