CVE-2026-19039
MediumCVSS 5.3Exploitation Probability (EPSS)
Elevated risk68th percentile - higher than 68% of all known CVEs
Summary
A vulnerability was detected in Kino-Kafkaesque ssh-mcp-server up to 8ebbbb99b26f80ff6162fe00957c6dec73fbc5a5. It affects the function ssh_exec in file src/index.ts of the SSH Command Handler component. Manipulation of the host/username argument results in command injection. The attack requires local access. The actual existence of this vulnerability is currently in question. This product uses a rolling release strategy, so version details cannot be specified. The project maintainer explains that the intended threat model is that this MCP server is a local/trusted tool for an agent to execute commands over SSH, so callers already have meaningful execution capability through the exposed shell.
Risk Assessment
The risk includes potential execution of unauthorized commands on the system, which could lead to data integrity and confidentiality breaches, especially if the server is used in a production environment.
Recommendation
Restrict access to the MCP server to trusted agents only and monitor activities. Also consider updating to the latest version if available and thoroughly validate input arguments.
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Original NVD description (English source)
A vulnerability was detected in Kino-Kafkaesque ssh-mcp-server up to 8ebbbb99b26f80ff6162fe00957c6dec73fbc5a5. Impacted is the function ssh_exec of the file src/index.ts of the component SSH Command Handler. Performing a manipulation of the argument host/username results in command injection. The attack requires a local approach. The actual existence of this vulnerability is currently in question. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project maintainer explains: "The intended threat model is that this MCP server is a local/trusted tool for an agent to execute commands over SSH, so callers already have meaningful execution capability through the exposed shell."
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

