CVE-2026-85756

Published: Set 16, 2026 Last Modified: Set 16, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

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.

78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability Non-Repudiation
Potential Impacts:
Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Read Files Or Directories Modify Files Or Directories Read Application Data Modify Application Data Hide Activities
Applicable Platforms
Technologies: Not Technology-Specific, AI/ML, Web Server
Likelihood of Exploit: High
View CWE Details
https://github.com/sshnet/SSH.NET/commit/c66b9f8fb06c12e717…
https://github.com/sshnet/SSH.NET/commit/c66b9f8fb06c12e71761e58a577b1e79602631…
https://github.com/sshnet/SSH.NET/releases/tag/2026.0.0
https://github.com/sshnet/SSH.NET/releases/tag/2026.0.0
https://github.com/sshnet/SSH.NET/security/advisories/GHSA-…
https://github.com/sshnet/SSH.NET/security/advisories/GHSA-mggc-4xg6-vcxf