CVE-2026-71557: fallo de gravedad media en go-git
go-git: Malicious reference names may modify files outside the reference storage
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
33Vexday Risk Score
Sin señal de explotación. Ella tiene prueba de concepto pública.
ssvc Attendcvss 6.3epss 0.4%
de la publicación al arma1 día
Publicada en NVD7 ago
1ª PoC+1d
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L
Productos afectados
go-git · go-gitPoCs públicas encontradas — 2
githubgithub.com/Saku0512/reprokit-go-git-cve-2026-71557-lab★ 0githubgithub.com/Saku0512/CVE-2026-71557-poc★ 0⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
CVEs relacionadas — go-git
En el mismo producto, de las más peligrosas a las menos.
CVE-2023-49569CRITICALMaliciously crafted Git server replies can lead to path traversal and RCE on go-git clientsEPSS 1.5%CVE-2025-21613CRITICALgo-git has an Argument Injection via the URL fieldEPSS 1.3%CVE-2025-21614HIGHgo-git clients vulnerable to DoS via maliciously crafted Git server repliesEPSS 0.7%CVE-2023-49568HIGHMaliciously crafted Git server replies can cause DoS on go-git clientsEPSS 0.7%CVE-2026-45570LOWgo-git: Improper single-quote escaping in go-git SSH transportEPSS 0.4%CVE-2026-71556HIGHgo-git: Worktree operations may follow symlinksEPSS 0.4%
Referencias
https://github.com/go-git/go-git/commit/4a0e66d555de5f9a30c31e2df64f445f42bd01e7https://github.com/go-git/go-git/commit/da9f7d8a0e98b475600177348d6ece384a370f36https://github.com/go-git/go-git/pull/2247https://github.com/go-git/go-git/pull/2254https://github.com/go-git/go-git/releases/tag/v5.19.2https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5https://github.com/go-git/go-git/security/advisories/GHSA-qgq7-7hm3-q39j