CVE Watch11 ago 2026

CVE-2026-5917

libgit2 versions v0.27.0 through v1.9.0 built with the libssh2 SSH backend (USE_SSH=libssh2) contain a shell command injection vulnerability

CVSS

9.6

Crítico

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 11 ago 2026 · Última mod.: 11 ago 2026 · CWE-78

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

libgit2 versions v0.27.0 through v1.9.0 built with the libssh2 SSH backend (USE_SSH=libssh2) contain a shell command injection vulnerability that allows remote attackers to execute arbitrary commands on an SSH server by supplying a repository path containing unescaped shell metacharacters such as single quotes, semicolons, or pipes. The gen_proto() function in ssh_libssh2.c inserts the repository path directly into a shell command string without escaping special characters before passing it to libssh2_channel_exec(), enabling an attacker to craft a malicious submodule URL in a .gitmodules file that, when processed during a recursive clone, causes the remote server's shell to interpret injected commands under the victim's SSH user account.

Referencias oficiales

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