CRITICALpublic-safe

CVE-2026-5917

NVD: 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... NVD: 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... OSV: libgit2 v0.27.0-v1.9.0 Shell Command Injection via ssh_libssh2 Backend

CVSS
9.4 Severity
CRITICAL EPSS
0.0086 (55) KEV
-

Source-published summary

Possible impact

Source describes command injection risk · remote exposure. Possible impact: A remote attacker may be able to run unintended system commands through the affected component.

Affected context

Affected product or version requires source confirmation.

Remediation / advisory

Remediation reference present; patch status requires confirmation in the linked advisory.

Why it matters

Source describes command injection risk · remote exposure. Possible impact: A remote attacker may be able to run unintended system commands through the affected component.; CVSS 9.4 (CRITICAL); EPSS percentile 55; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

remote exposure

Impact tags

command injection riskremote exposure relevant

Urgency reasons

CVSS CRITICALvendor advisory presentrecent update

Source-derived note

Summary derived from NVD / OSV description; unsafe procedural detail is not shown.

Redaction metadata

source summary used: True
fallback summary used: False
unsafe procedural detail present: false
raw source displayed: false
public summary redacted: true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.