{"id":"CVE-2026-85756","revision":"6fdf84d3753b478aa2374fbe9ba9ca5d","records":[{"revision":"6fdf84d3753b478aa2374fbe9ba9ca5d","observedAt":"2026-10-25T16:19:16.24+00:00","statement":{"source":"nvd","id":"CVE-2026-85756","aliases":[],"title":"SSH.NET is a Secure Shell (SSH) library for .NET. Prior to 2026.0.0, ScpClient places caller-supplied remote paths into the command used to run scp on the server, and the default RemotePathTransformation.DoubleQuote transformation cannot sa…","description":"SSH.NET is a Secure Shell (SSH) library for .NET. Prior to 2026.0.0, ScpClient places caller-supplied remote paths into the command used to run scp on the server, and the default RemotePathTransformation.DoubleQuote transformation cannot safely quote every remote command interpreter. When an application passes an attacker-controlled path to a shell-based server, shell metacharacters not neutralized by the active IRemotePathTransformation can execute commands as the authenticated SSH user. Exploitation requires a shell-based server and a path crafted for that shell's parsing rules; non-shell servers and paths fully neutralized by the selected transformation are not affected. RemotePathTransformation.ShellQuote is available for POSIX shells, while SftpClient avoids a remote shell entirely. This issue is fixed in version 2026.0.0.","state":0,"publishedAt":"2026-09-16T17:18:16.163+00:00","modifiedAt":"2026-09-30T17:51:36.337+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/sshnet/SSH.NET/commit/c66b9f8fb06c12e71761e58a577b1e796026310f","https://github.com/sshnet/SSH.NET/releases/tag/2026.0.0","https://github.com/sshnet/SSH.NET/security/advisories/GHSA-mggc-4xg6-vcxf"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85756","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-78"],"productCriteria":[],"sourceDates":{"published":"2026-09-16T17:18:16.163","lastModified":"2026-09-30T17:51:36.337"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-85756","identifiers":["CVE-2026-85756"]},"retained":false,"historicalAffected":[]}],"coverage":[]}