What’s Vulnerable › Vulnerabilities
CVE-2026-71557: go-git: Malicious reference names may modify files outside the reference storage
- Severity: medium (CVSS 6.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-07 · updated 2026-09-10
- Weakness: CWE-22
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.
Affected products
- go-git: before 5.19.2; from 6.0.0-alpha.1, < 6.0.0-alpha.5
References
- 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/pull/2247
- https://github.com/go-git/go-git/pull/2254
- 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
- https://github.com/go-git/go-git/security/advisories/GHSA-qgq7-7hm3-q39j
Get alerted when CVE-2026-71557 or the next vulnerability affects your stack